## Table of Contents

289 relations: Absolute zero, Absorbing element, Abstract algebra, Addition, Additive group, Additive identity, Address, Al-Andalus, Al-Khwarizmi, Al-Mansur, Alan Gardiner, Algebraic number, Algebraic structure, ALGOL 58, Algorism, Algorithm, Almagest, Ancient Greece, Ancient Greek astronomy, Andalé Mono, Andes, Angular diameter, Anno Domini, API, Arabic, Array (data type), Aryabhatiya, Astrolabe, Astronomical year numbering, Śūnyatā, Babylonia, Babylonian cuneiform numerals, Babylonian mathematics, Bakhshali manuscript, Béjaïa, Bede, Bengali numerals, Binary code, Binary number, Birch, Bodleian Library, Boolean data type, Brahmagupta, Brāhmasphuṭasiddhānta, British English, Burmese numerals, Byte, C (programming language), Calendar era, Cambodia, ... Expand index (239 more) »

- 0 (number)
- Elementary arithmetic

## Absolute zero

Absolute zero is the lowest limit of the thermodynamic temperature scale; a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as zero kelvin.

## Absorbing element

In mathematics, an absorbing element (or annihilating element) is a special type of element of a set with respect to a binary operation on that set.

## Abstract algebra

In mathematics, more specifically algebra, abstract algebra or modern algebra is the study of algebraic structures, which are sets with specific operations acting on their elements.

## Addition

Addition (usually signified by the plus symbol) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. 0 and Addition are elementary arithmetic.

See 0 and Addition

## Additive group

An additive group is a group of which the group operation is to be thought of as addition in some sense.

## Additive identity

In mathematics, the additive identity of a set that is equipped with the operation of addition is an element which, when added to any element in the set, yields. 0 and additive identity are 0 (number).

## Address

An address is a collection of information, presented in a mostly fixed format, used to give the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along with other identifiers such as house or apartment numbers and organization name.

See 0 and Address

## Al-Andalus

Al-Andalus was the Muslim-ruled area of the Iberian Peninsula.

See 0 and Al-Andalus

## Al-Khwarizmi

Muhammad ibn Musa al-Khwarizmi (محمد بن موسى خوارزمی), often referred to as simply al-Khwarizmi, was a polymath who produced vastly influential Arabic-language works in mathematics, astronomy, and geography.

## Al-Mansur

Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr (أبو جعفر عبد الله بن محمد المنصور‎; 95 AH – 158 AH/714 CE – 6 October 775 CE) usually known simply as by his laqab al-Manṣūr (المنصور) was the second Abbasid caliph, reigning from 136 AH to 158 AH (754 CE – 775 CE) succeeding his brother al-Saffah.

See 0 and Al-Mansur

## Alan Gardiner

Sir Alan Henderson Gardiner, (29 March 1879 – 19 December 1963) was an English Egyptologist, linguist, philologist, and independent scholar.

## Algebraic number

An algebraic number is a number that is a root of a non-zero polynomial (of finite degree) in one variable with integer (or, equivalently, rational) coefficients.

## Algebraic structure

In mathematics, an algebraic structure consists of a nonempty set A (called the underlying set, carrier set or domain), a collection of operations on A (typically binary operations such as addition and multiplication), and a finite set of identities, known as axioms, that these operations must satisfy.

## ALGOL 58

ALGOL 58, originally named IAL, is one of the family of ALGOL computer programming languages.

See 0 and ALGOL 58

## Algorism

Algorism is the technique of performing basic arithmetic by writing numbers in place value form and applying a set of memorized rules and facts to the digits.

See 0 and Algorism

## Algorithm

In mathematics and computer science, an algorithm is a finite sequence of mathematically rigorous instructions, typically used to solve a class of specific problems or to perform a computation.

See 0 and Algorithm

## Almagest

The Almagest is a 2nd-century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy in Koine Greek.

See 0 and Almagest

## Ancient Greece

Ancient Greece (Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity, that comprised a loose collection of culturally and linguistically related city-states and other territories.

## Ancient Greek astronomy

Ancient Greek astronomy is the astronomy written in the Greek language during classical antiquity.

See 0 and Ancient Greek astronomy

## Andalé Mono

Andalé Mono (for technical reasons also Andale Mono) is a monospaced sans-serif typeface designed by Steve Matteson for terminal emulation and software development environments, originally for the Taligent project by Apple Inc. and IBM.

## Andes

The Andes, Andes Mountains or Andean Mountain Range are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America.

See 0 and Andes

## Angular diameter

The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a given point of view.

## Anno Domini

The terms anno Domini. (AD) and before Christ (BC) are used when designating years in the Julian and Gregorian calendars.

## API

An is a way for two or more computer programs or components to communicate with each other.

See 0 and API

## Arabic

Arabic (اَلْعَرَبِيَّةُ, or عَرَبِيّ, or) is a Central Semitic language of the Afroasiatic language family spoken primarily in the Arab world.

See 0 and Arabic

## Array (data type)

In computer science, array is a data type that represents a collection of elements (values or variables), each selected by one or more indices (identifying keys) that can be computed at run time during program execution.

## Aryabhatiya

Aryabhatiya (IAST) or Aryabhatiyam, a Sanskrit astronomical treatise, is the magnum opus and only known surviving work of the 5th century Indian mathematician Aryabhata.

## Astrolabe

An astrolabe (ἀστρολάβος,; ٱلأَسْطُرلاب; ستارهیاب) is an astronomical instrument dating to ancient times.

See 0 and Astrolabe

## Astronomical year numbering

Astronomical year numbering is based on AD/CE year numbering, but follows normal decimal integer numbering more strictly.

See 0 and Astronomical year numbering

## Śūnyatā

Śūnyatā (शून्यता; script), translated most often as "emptiness", "vacuity", and sometimes "voidness", or "nothingness" is an Indian philosophical concept.

See 0 and Śūnyatā

## Babylonia

Babylonia (𒆳𒆍𒀭𒊏𒆠) was an ancient Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Syria and Iran).

See 0 and Babylonia

## Babylonian cuneiform numerals

Babylonian cuneiform numerals, also used in Assyria and Chaldea, were written in cuneiform, using a wedge-tipped reed stylus to print a mark on a soft clay tablet which would be exposed in the sun to harden to create a permanent record.

See 0 and Babylonian cuneiform numerals

## Babylonian mathematics

Babylonian mathematics (also known as Assyro-Babylonian mathematics) is the mathematics developed or practiced by the people of Mesopotamia, as attested by sources mainly surviving from the Old Babylonian period (1830–1531 BC) to the Seleucid from the last three or four centuries BC.

See 0 and Babylonian mathematics

## Bakhshali manuscript

The Bakhshali manuscript is an ancient Indian mathematical text written on birch bark that was found in 1881 in the village of Bakhshali, Mardan (near Peshawar in present-day Pakistan, historical Gandhara).

See 0 and Bakhshali manuscript

## Béjaïa

Béjaïa (بجاية, Bijāya,, Bgayet) formerly Bougie and Bugia, is a Mediterranean port city and commune on the Gulf of Béjaïa in Algeria; it is the capital of Béjaïa Province, Kabylia.

See 0 and Béjaïa

## Bede

Bede (Bēda; 672/326 May 735), also known as Saint Bede, the Venerable Bede, and Bede the Venerable (Beda Venerabilis), was an English monk, author and scholar.

See 0 and Bede

## Bengali numerals

Bengali–Assamese numerals (xoiŋkha, sôṅkhya, ꯃꯁꯤꯡ|mashing) are the units of the numeral system, originating from the Indian subcontinent, used officially in Assamese, Bengali, and Manipuri, 3 of the 22 official languages of the Indian Republic, as well as traditionally in Bishnupriya, Chakma and Hajong languages.

## Binary code

A binary code represents text, computer processor instructions, or any other data using a two-symbol system.

## Binary number

A binary number is a number expressed in the base-2 numeral system or binary numeral system, a method for representing numbers that uses only two symbols for the natural numbers: typically "0" (zero) and "1" (one). 0 and binary number are elementary arithmetic.

## Birch

A birch is a thin-leaved deciduous hardwood tree of the genus Betula, in the family Betulaceae, which also includes alders, hazels, and hornbeams.

See 0 and Birch

## Bodleian Library

The Bodleian Library is the main research library of the University of Oxford.

## Boolean data type

In computer science, the Boolean (sometimes shortened to Bool) is a data type that has one of two possible values (usually denoted true and false) which is intended to represent the two truth values of logic and Boolean algebra.

## Brahmagupta

Brahmagupta (–) was an Indian mathematician and astronomer.

## Brāhmasphuṭasiddhānta

The Brāhma-sphuṭa-siddhānta ("Correctly Established Doctrine of Brahma", abbreviated BSS) is a main work of Brahmagupta, written c. 628.

See 0 and Brāhmasphuṭasiddhānta

## British English

British English is the set of varieties of the English language native to the island of Great Britain.

## Burmese numerals

Burmese numerals (မြန်မာ ကိန်းဂဏန်းများ) are a set of numerals traditionally used in the Burmese language, although Arabic numerals are also used.

## Byte

The byte is a unit of digital information that most commonly consists of eight bits.

See 0 and Byte

## C (programming language)

C (pronounced – like the letter c) is a general-purpose programming language.

See 0 and C (programming language)

## Calendar era

A calendar era is the period of time elapsed since one epoch of a calendar and, if it exists, before the next one.

## Cambodia

Cambodia, officially the Kingdom of Cambodia, is a country in Mainland Southeast Asia.

See 0 and Cambodia

## Cardinality

In mathematics, the cardinality of a set is a measure of the number of elements of the set.

## Category theory

Category theory is a general theory of mathematical structures and their relations.

## Central processing unit

A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer.

See 0 and Central processing unit

## Charles Seife

Charles Seife is an American author, journalist, and professor at New York University.

## Chaturbhuj Temple, Gwalior

Chaturbhuj is a Hindu temple excavated in a rock face in the Gwalior Fort, in c875 AD, by Alla, the son of Vaillabhatta, and the grandson of Nagarabhatta a nagar brahmin in present-day Madhya Pradesh, India.

See 0 and Chaturbhuj Temple, Gwalior

## Chiapas

Chiapas (Tzotzil and Tzeltal: Chyapas), officially the Free and Sovereign State of Chiapas (Estado Libre y Soberano de Chiapas), is one of the states that make up the 32 federal entities of Mexico.

See 0 and Chiapas

## Chinese characters of Empress Wu

The Chinese characters of Empress Wu, or the Zetian characters, are Chinese characters introduced by Empress Wu Zetian, the only empress regnant in the history of China, in order to demonstrate her power.

See 0 and Chinese characters of Empress Wu

## Chinese numerals

Chinese numerals are words and characters used to denote numbers in written Chinese.

## Church of Alexandria

The Church of Alexandria in Egypt was the Christian Church headed by the patriarch of Alexandria.

See 0 and Church of Alexandria

## Classic Mac OS

Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Macintosh family of personal computers by Apple Computer, Inc. from 1984 to 2001, starting with System 1 and ending with Mac OS 9.

## COBOL

COBOL (an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use.

See 0 and COBOL

## Cognitive science

Cognitive science is the interdisciplinary, scientific study of the mind and its processes.

## Complex number

In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted, called the imaginary unit and satisfying the equation i^.

## Composite number

A composite number is a positive integer that can be formed by multiplying two smaller positive integers.

## Computer monitor

A computer monitor is an output device that displays information in pictorial or textual form.

## Computer programming

Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks.

See 0 and Computer programming

## Constant function

In mathematics, a constant function is a function whose (output) value is the same for every input value.

## Cosmology

Cosmology is a branch of physics and metaphysics dealing with the nature of the universe, the cosmos.

See 0 and Cosmology

## Counting rods

Counting rods (筭) are small bars, typically 3–14 cm (1" to 6") long, that were used by mathematicians for calculation in ancient East Asia.

## Cricket

Cricket is a bat-and-ball game that is played between two teams of eleven players on a field, at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps.

See 0 and Cricket

## Date of Easter

As a moveable feast, the date of Easter is determined in each year through a calculation known as computation.

## Decibel

The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B).

See 0 and Decibel

## Decimal

The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. 0 and decimal are elementary arithmetic.

See 0 and Decimal

## Decimal representation

A decimal representation of a non-negative real number is its expression as a sequence of symbols consisting of decimal digits traditionally written with a single separator: r.

See 0 and Decimal representation

## Definition

A definition is a statement of the meaning of a term (a word, phrase, or other set of symbols).

See 0 and Definition

## Digit (unit)

The digit or finger is an ancient and obsolete non-SI unit of measurement of length.

## Digital electronics

Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them.

## Dionysius Exiguus

Dionysius Exiguus (Latin for "Dionysius the Humble"; Greek: Διονύσιος; –) was a 6th-century Eastern Roman monk born in Scythia Minor.

## Division (mathematics)

Division is one of the four basic operations of arithmetic. 0 and Division (mathematics) are elementary arithmetic.

See 0 and Division (mathematics)

## Division by zero

In mathematics, division by zero, division where the divisor (denominator) is zero, is a unique and problematic special case. 0 and division by zero are 0 (number).

## Dover Publications

Dover Publications, also known as Dover Books, is an American book publisher founded in 1941 by Hayward and Blanche Cirker.

## Duck (cricket)

In cricket, a duck is a batsman's dismissal with a score of zero.

## Eastern Arabic numerals

The Eastern Arabic numerals, also called Indo-Arabic numerals, are the symbols used to represent numerical digits in conjunction with the Arabic alphabet in the countries of the Mashriq (the east of the Arab world), the Arabian Peninsula, and its variant in other countries that use the Persian numerals on the Iranian plateau and in Asia.

See 0 and Eastern Arabic numerals

## Edsger W. Dijkstra

Edsger Wybe Dijkstra (11 May 1930 – 6 August 2002) was a Dutch computer scientist, programmer, software engineer, mathematician, and science essayist.

## Egyptian hieroglyphs

Egyptian hieroglyphs were the formal writing system used in Ancient Egypt for writing the Egyptian language.

See 0 and Egyptian hieroglyphs

## Egyptian numerals

The system of ancient Egyptian numerals was used in Ancient Egypt from around 3000 BC until the early first millennium AD.

## Empty product

In mathematics, an empty product, or nullary product or vacuous product, is the result of multiplying no factors.

## Empty set

In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero.

See 0 and Empty set

## Empty sum

In mathematics, an empty sum, or nullary sum, is a summation where the number of terms is zero. 0 and empty sum are 0 (number).

See 0 and Empty sum

## Epact

The epact (epactae, from ἐπακται ἡμεραι.

See 0 and Epact

## Epoch (computing)

In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time.

## Error code

In computing, an error code (or a return code) is a numeric or alphanumeric code that indicates the nature of an error and, when possible, why it occurred.

See 0 and Error code

## Ethiopia

Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa.

See 0 and Ethiopia

## Euclid

Euclid (Εὐκλείδης; BC) was an ancient Greek mathematician active as a geometer and logician.

See 0 and Euclid

## Even and odd functions

In mathematics, an even function is a real function such that f(-x).

See 0 and Even and odd functions

## Evolution

Evolution is the change in the heritable characteristics of biological populations over successive generations.

See 0 and Evolution

## Exit status

In computing, the exit status, or exit code, of a terminated process is an integer number that is made available to its parent process (or caller).

## Exponentiation

In mathematics, exponentiation is an operation involving two numbers: the base and the exponent or power.

## Factorial

In mathematics, the factorial of a non-negative denoted is the product of all positive integers less than or equal The factorial also equals the product of n with the next smaller factorial: \begin n! &.

See 0 and Factorial

## FE-Schrift

The FE-Schrift or Fälschungserschwerende Schrift ('forgery-impeding typeface') is a sans serif typeface introduced for use on licence plates.

See 0 and FE-Schrift

## Fibonacci

Fibonacci (also,; –) was an Italian mathematician from the Republic of Pisa, considered to be "the most talented Western mathematician of the Middle Ages".

See 0 and Fibonacci

## Fibonacci Quarterly

The Fibonacci Quarterly is a scientific journal on mathematical topics related to the Fibonacci numbers, published four times per year.

## Floating-point arithmetic

In computing, floating-point arithmetic (FP) is arithmetic that represents subsets of real numbers using an integer with a fixed precision, called the significand, scaled by an integer exponent of a fixed base.

See 0 and Floating-point arithmetic

## Fortran

Fortran (formerly FORTRAN) is a third generation, compiled, imperative programming language that is especially suited to numeric computation and scientific computing.

See 0 and Fortran

## Free variables and bound variables

In mathematics, and in other disciplines involving formal languages, including mathematical logic and computer science, a variable may be said to be either free or bound.

See 0 and Free variables and bound variables

## Geʽez

Geez (or; ግዕዝ, and sometimes referred to in scholarly literature as Classical Ethiopic) is an ancient South Semitic language.

See 0 and Geʽez

## Glyph

A glyph is any kind of purposeful mark.

See 0 and Glyph

## Grammatical number

In linguistics, grammatical number is a feature of nouns, pronouns, adjectives and verb agreement that expresses count distinctions (such as "one", "two" or "three or more").

## Greatest element and least element

In mathematics, especially in order theory, the greatest element of a subset S of a partially ordered set (poset) is an element of S that is greater than every other element of S. The term least element is defined dually, that is, it is an element of S that is smaller than every other element of S.

See 0 and Greatest element and least element

## Greece

Greece, officially the Hellenic Republic, is a country in Southeast Europe.

See 0 and Greece

## Greek numerals

Greek numerals, also known as Ionic, Ionian, Milesian, or Alexandrian numerals, are a system of writing numbers using the letters of the Greek alphabet.

## Han dynasty

The Han dynasty was an imperial dynasty of China (202 BC9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu.

## Hexadecimal

In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of sixteen.

## High-level programming language

In computer science, a high-level programming language is a programming language with strong abstraction from the details of the computer.

See 0 and High-level programming language

## Hindu–Arabic numeral system

The Hindu–Arabic numeral system (also known as the Indo-Arabic numeral system,Audun Holme,, 2000 Hindu numeral system, Arabic numeral system) is a positional base ten numeral system for representing integers; its extension to non-integers is the decimal numeral system, which is presently the most common numeral system. 0 and Hindu–Arabic numeral system are Indian inventions.

See 0 and Hindu–Arabic numeral system

## Hinduism

Hinduism is an Indian religion or dharma, a religious and universal order by which its followers abide.

See 0 and Hinduism

## Hindustani numerals

Like many Indo-Aryan languages, Hindustani (Hindi-Urdu) has a decimal numeral system that is contracted to the extent that nearly every number 1–99 is irregular, and needs to be memorized as a separate numeral.

## Hipparchus

Hipparchus (Ἵππαρχος, Hipparkhos; BC) was a Greek astronomer, geographer, and mathematician.

See 0 and Hipparchus

## History of astronomy

Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy.

See 0 and History of astronomy

## History of mathematics

The history of mathematics deals with the origin of discoveries in mathematics and the mathematical methods and notation of the past.

See 0 and History of mathematics

## History of printing

The history of printing starts as early as 3000 BCE, when the proto-Elamite and Sumerian civilizations used cylinder seals to certify documents written in clay tablets.

## IBM 3270

The IBM 3270 is a family of block oriented display and printer computer terminals introduced by IBM in 1971 and normally used to communicate with IBM mainframes.

See 0 and IBM 3270

## IBM hexadecimal floating-point

Hexadecimal floating point (now called HFP by IBM) is a format for encoding floating-point numbers first introduced on the IBM System/360 computers, and supported on subsequent machines based on that architecture, as well as machines which were intended to be application-compatible with System/360.

See 0 and IBM hexadecimal floating-point

## Identity element

In mathematics, an identity element or neutral element of a binary operation is an element that leaves unchanged every element when the operation is applied.

## IEEE 754

The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point arithmetic established in 1985 by the Institute of Electrical and Electronics Engineers (IEEE).

See 0 and IEEE 754

## Inca Empire

The Inca Empire, officially known as the Realm of the Four Parts (Tawantinsuyu, "four parts together"), was the largest empire in pre-Columbian America.

## Indeterminate form

In calculus, it is usually possible to compute the limit of the sum, difference, product, quotient or power of two functions by taking the corresponding combination of the separate limits of each respective function.

## Indian mathematics

Indian mathematics emerged in the Indian subcontinent from 1200 BCE until the end of the 18th century.

## Indian subcontinent

The Indian subcontinent is a physiographical region in Southern Asia, mostly situated on the Indian Plate, projecting southwards into the Indian Ocean from the Himalayas.

## Initial and terminal objects

In category theory, a branch of mathematics, an initial object of a category is an object in such that for every object in, there exists precisely one morphism.

See 0 and Initial and terminal objects

## Integer

An integer is the number zero (0), a positive natural number (1, 2, 3,...), or the negation of a positive natural number (−1, −2, −3,...). The negations or additive inverses of the positive natural numbers are referred to as negative integers. 0 and integer are integers.

See 0 and Integer

## Italian language

Italian (italiano,, or lingua italiana) is a Romance language of the Indo-European language family that evolved from the Vulgar Latin of the Roman Empire.

## Jainism

Jainism, also known as Jain Dharma, is an Indian religion.

See 0 and Jainism

## Java (programming language)

Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible.

See 0 and Java (programming language)

## Java Database Connectivity

Java Database Connectivity (JDBC) is an application programming interface (API) for the Java programming language which defines how a client may access a database.

See 0 and Java Database Connectivity

## Johannes de Sacrobosco

Johannes de Sacrobosco, also written Ioannes de Sacro Bosco, later called John of Holywood or John of Holybush (1195 – 1256), was a scholar, monk, and astronomer who taught at the University of Paris.

See 0 and Johannes de Sacrobosco

## Kelvin

The kelvin, symbol K, is the base unit of measurement for temperature in the International System of Units (SI).

See 0 and Kelvin

## Khmer numerals

Khmer numerals are the numerals used in the Khmer language.

## Kish (Sumer)

Kish (Kiš;; cuneiform: 𒆧𒆠; Kiššatu, near modern Tell al-Uhaymir) is an important archaeological site in Babil Governorate (Iraq), located south of Baghdad and east of the ancient city of Babylon.

## Kratié province

Kratié (ក្រចេះ), alternatively spelled Kracheh, is a province of Cambodia located in the northeast.

## L'Hôpital's rule

L'Hôpital's rule or L'Hospital's rule, also known as Bernoulli's rule, is a mathematical theorem that allows evaluating limits of indeterminate forms using derivatives.

## Latin

Latin (lingua Latina,, or Latinum) is a classical language belonging to the Italic branch of the Indo-European languages.

See 0 and Latin

## Latins

The term "Latins" is a linguistic concept referring to an ancient Italic people whose language was Latin, native to the region of Latium in central Italy, and by extension to the native speakers of modern languages descended from Latin.

See 0 and Latins

## Lattice (order)

A lattice is an abstract structure studied in the mathematical subdisciplines of order theory and abstract algebra.

## Lemma (mathematics)

In mathematics, informal logic and argument mapping, a lemma (lemmas or lemmata) is a generally minor, proven proposition which is used as a stepping stone to a larger result.

## Lens

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

See 0 and Lens

## Limit of a function

Although the function is not defined at zero, as becomes closer and closer to zero, becomes arbitrarily close to 1.

## Lisp (programming language)

Lisp (historically LISP, an abbreviation of "list processing") is a family of programming languages with a long history and a distinctive, fully parenthesized prefix notation.

See 0 and Lisp (programming language)

## Lokavibhaga

The Lokavibhāga is a Jain cosmological text originally composed in Prakrit by a Digambara monk, Sarvanandi, surviving in a later Sanskrit translation by one Siṃhasūri.

## Lunar eclipse

A lunar eclipse is an astronomical event that occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened.

## Machine code

In computer programming, machine code is computer code consisting of machine language instructions, which are used to control a computer's central processing unit (CPU).

## MacTutor History of Mathematics Archive

The MacTutor History of Mathematics Archive is a website maintained by John J. O'Connor and Edmund F. Robertson and hosted by the University of St Andrews in Scotland.

See 0 and MacTutor History of Mathematics Archive

## Mathematical Association of America

The Mathematical Association of America (MAA) is a professional society that focuses on mathematics accessible at the undergraduate level.

See 0 and Mathematical Association of America

## Mathematical constant

A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems.

See 0 and Mathematical constant

## Mathematical Treatise in Nine Sections

The Mathematical Treatise in Nine Sections is a mathematical text written by Chinese Southern Song dynasty mathematician Qin Jiushao in the year 1247.

See 0 and Mathematical Treatise in Nine Sections

## Mathematics in the medieval Islamic world

Mathematics during the Golden Age of Islam, especially during the 9th and 10th centuries, was built upon syntheses of Greek mathematics (Euclid, Archimedes, Apollonius) and Indian mathematics (Aryabhata, Brahmagupta).

See 0 and Mathematics in the medieval Islamic world

## Maya civilization

The Maya civilization was a Mesoamerican civilization that existed from antiquity to the early modern period.

## Maya numerals

The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization.

## Medieval Greek

Medieval Greek (also known as Middle Greek, Byzantine Greek, or Romaic) is the stage of the Greek language between the end of classical antiquity in the 5th–6th centuries and the end of the Middle Ages, conventionally dated to the Ottoman conquest of Constantinople in 1453.

## Mekong

The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia.

See 0 and Mekong

## Melting point

The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid.

## Mesoamerican Long Count calendar

The Mesoamerican Long Count calendar is a non-repeating base-20 and base-18 calendar used by several pre-Columbian Mesoamerican cultures, most notably the Maya.

See 0 and Mesoamerican Long Count calendar

## Middle Ages

In the history of Europe, the Middle Ages or medieval period (also spelt mediaeval or mediæval) lasted from approximately 500 to 1500 AD.

## Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol, is a unit of angular measurement equal to of one degree.

See 0 and Minute and second of arc

## Moors

The term Moor is an exonym first used by Christian Europeans to designate the Muslim populations of the Maghreb, al-Andalus (Iberian Peninsula), Sicily and Malta during the Middle Ages.

See 0 and Moors

## Morse code

Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.

See 0 and Morse code

## Muhammad ibn Ahmad al-Khwarizmi

Muḥammad ibn al-ʿAbbās Abū Bakr al-Khwārazmī, better simply known as Abu Bakr al-Khwarazmi was a 10-th century Persian poet born in Khwarazm (region in Central Asia conquered by Achaemenids in the 6th century BC), who throughout his long career served in the court of the Hamdanids, Samanids, Saffarids and Buyids.

See 0 and Muhammad ibn Ahmad al-Khwarizmi

## Multiple (mathematics)

In mathematics, a multiple is the product of any quantity and an integer. 0 and multiple (mathematics) are integers.

See 0 and Multiple (mathematics)

## Multiplication

Multiplication (often denoted by the cross symbol, by the mid-line dot operator, by juxtaposition, or, on computers, by an asterisk) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. 0 and Multiplication are elementary arithmetic.

## Multiplicative inverse

In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by x yields the multiplicative identity, 1.

See 0 and Multiplicative inverse

## Muslims

Muslims (God) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition.

See 0 and Muslims

## Names for the number 0 in English

"Zero" is the usual name for the number 0 in English. 0 and names for the number 0 in English are 0 (number) and integers.

See 0 and Names for the number 0 in English

## Natural number

In mathematics, the natural numbers are the numbers 0, 1, 2, 3, etc., possibly excluding 0. 0 and natural number are integers.

## Nefer

The Egyptian hieroglyph for "perfect, complete" (with the extended meanings of "good, pleasant, well, beautiful") in Gardiner's sign list is numbered F35; its phonetic value is nfr, with a reconstructed pronunciation of and a conventional Egyptological vocalization of nefer.

See 0 and Nefer

## Negative temperature

Certain systems can achieve negative thermodynamic temperature; that is, their temperature can be expressed as a negative quantity on the Kelvin or Rankine scales.

See 0 and Negative temperature

## Null (SQL)

In SQL, null or NULL is a special marker used to indicate that a data value does not exist in the database.

See 0 and Null (SQL)

## Null pointer

In computing, a null pointer or null reference is a value saved for indicating that the pointer or reference does not refer to a valid object.

## Number

A number is a mathematical object used to count, measure, and label.

See 0 and Number

## Number line

In elementary mathematics, a number line is a picture of a straight line that serves as spatial representation of numbers, usually graduated like a ruler with a particular origin point representing the number zero and evenly spaced marks in either direction representing integers, imagined to extend infinitely.

## Number theory

Number theory (or arithmetic or higher arithmetic in older usage) is a branch of pure mathematics devoted primarily to the study of the integers and arithmetic functions.

## Numerical digit

A numerical digit (often shortened to just digit) or numeral is a single symbol used alone (such as "1") or in combinations (such as "15"), to represent numbers in a positional numeral system.

## O

O, or o, is the fifteenth letter and the fourth vowel letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.

See 0 and O

## Old World

The "Old World" is a term for Afro-Eurasia that originated in Europe after 1493, when Europeans became aware of the existence of the Americas.

See 0 and Old World

## Olmecs

The Olmecs were the earliest known major Mesoamerican civilization.

See 0 and Olmecs

## Omicron

Omicron (uppercase Ο, lowercase ο, όμικρον) is the fifteenth letter of the Greek alphabet.

See 0 and Omicron

## Ones' complement

The ones' complement of a binary number is the value obtained by inverting (flipping) all the bits in the binary representation of the number.

## Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

## Order theory

Order theory is a branch of mathematics that investigates the intuitive notion of order using binary relations.

## Ordinal number

In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, th, etc.) aimed to extend enumeration to infinite sets.

## Origin (mathematics)

In mathematics, the origin of a Euclidean space is a special point, usually denoted by the letter O, used as a fixed point of reference for the geometry of the surrounding space.

See 0 and Origin (mathematics)

## Oxford English Dictionary

The Oxford English Dictionary (OED) is the principal historical dictionary of the English language, published by Oxford University Press (OUP), a University of Oxford publishing house.

See 0 and Oxford English Dictionary

## Oxford University Press

Oxford University Press (OUP) is the publishing house of the University of Oxford.

See 0 and Oxford University Press

## Palm OS

Palm OS (also known as Garnet OS) was a mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs) in 1996.

See 0 and Palm OS

## Papyrus Boulaq 18

The Papyrus Boulaq 18 is an ancient Egyptian administrative document.

## Parity (mathematics)

In mathematics, parity is the property of an integer of whether it is even or odd. 0 and parity (mathematics) are elementary arithmetic and integers.

See 0 and Parity (mathematics)

## Partially ordered set

In mathematics, especially order theory, a partial order on a set is an arrangement such that, for certain pairs of elements, one precedes the other.

See 0 and Partially ordered set

## Payment card number

A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards.

Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

See 0 and PDF

## Peano axioms

In mathematical logic, the Peano axioms, also known as the Dedekind–Peano axioms or the Peano postulates, are axioms for the natural numbers presented by the 19th-century Italian mathematician Giuseppe Peano.

## Persian language

Persian, also known by its endonym Farsi (Fārsī|), is a Western Iranian language belonging to the Iranian branch of the Indo-Iranian subdivision of the Indo-European languages.

## Persians

The Persians--> are an Iranian ethnic group who comprise over half of the population of Iran.

See 0 and Persians

## Pharaoh

Pharaoh (Egyptian: pr ꜥꜣ; ⲡⲣ̄ⲣⲟ|Pǝrro; Biblical Hebrew: Parʿō) is the vernacular term often used for the monarchs of ancient Egypt, who ruled from the First Dynasty until the annexation of Egypt by the Roman Republic in 30 BCE.

See 0 and Pharaoh

## Phon

The phon is a logarithmic unit of loudness level for tones and complex sounds.

See 0 and Phon

## Physical system

A physical system is a collection of physical objects under study.

## Physics

Physics is the natural science of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force.

See 0 and Physics

## Pingala

Acharya Pingala (c. 3rd2nd century BCE) was an ancient Indian poet and mathematician, and the author of the, also called the Pingala-sutras, the earliest known treatise on Sanskrit prosody.

See 0 and Pingala

## Pope Sylvester II

Pope Sylvester II (Silvester II; – 12 May 1003), originally known as Gerbert of Aurillac, was a scholar and teacher who served as the bishop of Rome and ruled the Papal States from 999 to his death.

## Positional notation

Positional notation (or place-value notation, or positional numeral system) usually denotes the extension to any base of the Hindu–Arabic numeral system (or decimal system).

## Postal codes in Canada

A Canadian postal code (code postal) is a six-character string that forms part of a postal address in Canada.

See 0 and Postal codes in Canada

## Power of 10

A power of 10 is any of the integer powers of the number ten; in other words, ten multiplied by itself a certain number of times (when the power is a positive integer).

## Prakrit

Prakrit is a group of vernacular Middle Indo-Aryan languages that were used in the Indian subcontinent from around the 3rd century BCE to the 8th century CE.

See 0 and Prakrit

## Prime ideal

In algebra, a prime ideal is a subset of a ring that shares many important properties of a prime number in the ring of integers.

## Prime number

A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers.

## Princeton University Press

Princeton University Press is an independent publisher with close connections to Princeton University.

See 0 and Princeton University Press

## Probability theory

Probability theory or probability calculus is the branch of mathematics concerned with probability.

## Propositional calculus

The propositional calculus is a branch of logic.

See 0 and Propositional calculus

## Ptolemy

Claudius Ptolemy (Πτολεμαῖος,; Claudius Ptolemaeus; AD) was an Alexandrian mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science.

See 0 and Ptolemy

## Pythagoras

Pythagoras of Samos (Πυθαγόρας; BC) was an ancient Ionian Greek philosopher, polymath and the eponymous founder of Pythagoreanism.

See 0 and Pythagoras

## Qin Jiushao

Qin Jiushao (ca. 1202–1261), courtesy name Daogu (道古), was a Chinese mathematician, meteorologist, inventor, politician, and writer.

## Quanta Magazine

Quanta Magazine is an editorially independent online publication of the Simons Foundation covering developments in physics, mathematics, biology and computer science.

## Quantity

Quantity or amount is a property that can exist as a multitude or magnitude, which illustrate discontinuity and continuity.

See 0 and Quantity

## Quantum mechanics

Quantum mechanics is a fundamental theory that describes the behavior of nature at and below the scale of atoms.

## Quatrefoil

A quatrefoil (anciently caterfoil) is a decorative element consisting of a symmetrical shape which forms the overall outline of four partially overlapping circles of the same diameter.

See 0 and Quatrefoil

## Quipu

Quipu (also spelled khipu) are recording devices fashioned from strings historically used by a number of cultures in the region of Andean South America.

See 0 and Quipu

## Radiocarbon dating

Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.

## Rational number

In mathematics, a rational number is a number that can be expressed as the quotient or fraction of two integers, a numerator and a non-zero denominator.

## Real number

In mathematics, a real number is a number that can be used to measure a continuous one-dimensional quantity such as a distance, duration or temperature.

## Republic of Pisa

The Republic of Pisa (Repubblica di Pisa) was an independent state existing from the 11th to the 15th century and centered on the Tuscan city of Pisa.

## Ring (mathematics)

In mathematics, rings are algebraic structures that generalize fields: multiplication need not be commutative and multiplicative inverses need not exist.

## Roman numerals

Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.

## Sanskrit

Sanskrit (attributively संस्कृत-,; nominally संस्कृतम्) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages.

See 0 and Sanskrit

## Sanskrit prosody

Sanskrit prosody or Chandas refers to one of the six Vedangas, or limbs of Vedic studies.

## Set theory

Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects.

See 0 and Set theory

## Sexagesimal

Sexagesimal, also known as base 60, is a numeral system with sixty as its base.

## Shaka era

The Shaka era (IAST: Śaka, Śāka) is a historical Hindu calendar era (year numbering), the epoch (its year zero) of which corresponds to Julian year 78.

See 0 and Shaka era

## Signed number representations

In computing, signed number representations are required to encode negative numbers in binary number systems.

See 0 and Signed number representations

## Signed zero

Signed zero is zero with an associated sign. 0 and Signed zero are 0 (number).

## Sindhi language

Sindhi (or सिन्धी) is an Indo-Aryan language spoken by about 30 million people in the Pakistani province of Sindh, where it has official status.

## Singleton (mathematics)

In mathematics, a singleton (also known as a unit set or one-point set) is a set with exactly one element.

See 0 and Singleton (mathematics)

## Slang

A slang is a vocabulary (words, phrases, and linguistic usages) of an informal register, common in everyday conversation but avoided in formal writing.

See 0 and Slang

## Slashed zero

The dotted or slashed zero 0̷ is a representation of the Arabic digit "0" (zero) with a slash or a dot through it. 0 and slashed zero are 0 (number).

## Solar eclipse

A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially.

## Sorani

Sorani Kurdish (rtl, Kurmancîy Xwarû), also known as Central Kurdish, is a Kurdish dialect or a language spoken in Iraq, mainly in Iraqi Kurdistan, as well as the provinces of Kurdistan, Kermanshah, and West Azerbaijan in western Iran.

See 0 and Sorani

## Stationary state

A stationary state is a quantum state with all observables independent of time.

## String (computer science)

In computer programming, a string is traditionally a sequence of characters, either as a literal constant or as some kind of variable.

See 0 and String (computer science)

## Subtraction

Subtraction (which is signified by the minus sign) is one of the four arithmetic operations along with addition, multiplication and division. 0 and Subtraction are elementary arithmetic.

## Sunzi Suanjing

Sunzi Suanjing was a mathematical treatise written during 3rd to 5th centuries CE which was listed as one of the Ten Computational Canons during the Tang dynasty.

## Telephone number

A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN), or other public and private networks.

## Telephone numbering plan

A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints.

See 0 and Telephone numbering plan

## Tennis

Tennis is a racket sport that is played either individually against a single opponent (singles) or between two teams of two players each (doubles).

See 0 and Tennis

## Tennis scoring system

The tennis scoring system is a standard widespread method for scoring tennis matches, including pick-up games.

See 0 and Tennis scoring system

## Thai numerals

Thai numerals (เลขไทย) are a set of numerals traditionally used in Thailand, although the Arabic numerals are more common due to extensive westernization of Thailand in the modern Rattanakosin period.

## The Guardian

The Guardian is a British daily newspaper.

## The Nine Chapters on the Mathematical Art

The Nine Chapters on the Mathematical Art is a Chinese mathematics book, composed by several generations of scholars from the 10th–2nd century BCE, its latest stage being from the 2nd century CE.

See 0 and The Nine Chapters on the Mathematical Art

## Theoretical astronomy

Theoretical astronomy is the use of analytical and computational models based on principles from physics and chemistry to describe and explain astronomical objects and astronomical phenomena.

See 0 and Theoretical astronomy

## Thermodynamic temperature

Thermodynamic temperature is a quantity defined in thermodynamics as distinct from kinetic theory or statistical mechanics.

See 0 and Thermodynamic temperature

## Three-valued logic

In logic, a three-valued logic (also trinary logic, trivalent, ternary, or trilean, sometimes abbreviated 3VL) is any of several many-valued logic systems in which there are three truth values indicating true, false, and some third value.

## Tortoise

Tortoises are reptiles of the family Testudinidae of the order Testudines (Latin for "tortoise").

See 0 and Tortoise

## Trachea

The trachea (tracheae or tracheas), also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all animals with lungs.

See 0 and Trachea

## Truth value

In logic and mathematics, a truth value, sometimes called a logical value, is a value indicating the relation of a proposition to truth, which in classical logic has only two possible values (true or false).

## Turtle shell

The turtle shell is a shield for the ventral and dorsal parts of turtles (the order Testudines), completely enclosing all the vital organs of the turtle and in some cases even the head.

## Two's complement

Two's complement is the most common method of representing signed (positive, negative, and zero) integers on computers, and more generally, fixed point binary values.

## Typeface

A typeface (or font family) is a design of letters, numbers and other symbols, to be used in printing or for electronic display.

See 0 and Typeface

## Typewriter

A typewriter is a mechanical or electromechanical machine for typing characters.

See 0 and Typewriter

## Undefined (mathematics)

In mathematics, the term undefined is often used to refer to an expression which is not assigned an interpretation or a value (such as an indeterminate form, which has the possibility of assuming different values).

See 0 and Undefined (mathematics)

## Unix time

Current Unix time Unix time is a date and time representation widely used in computing.

See 0 and Unix time

## Vacuum

A vacuum (vacuums or vacua) is space devoid of matter.

See 0 and Vacuum

## Vector space

In mathematics and physics, a vector space (also called a linear space) is a set whose elements, often called ''vectors'', can be added together and multiplied ("scaled") by numbers called ''scalars''.

## Vehicle registration plates of Germany

Vehicle registration plates (Kraftfahrzeug-Kennzeichen or, more colloquially, Nummernschilder) are mandatory alphanumeric plates used to display the registration mark of a vehicle registered in Germany.

See 0 and Vehicle registration plates of Germany

## Vigesimal

A vigesimal or base-20 (base-score) numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten).

See 0 and Vigesimal

## Von Neumann cardinal assignment

The von Neumann cardinal assignment is a cardinal assignment that uses ordinal numbers.

See 0 and Von Neumann cardinal assignment

## W. W. Norton & Company

W.

See 0 and W. W. Norton & Company

## Walter Eugene Clark

Walter Eugene Clark (September 8, 1881 – September 30, 1960), was an American philologist.

## Wars of Alexander the Great

The wars of Alexander the Great (Greek: Πόλεμοι τουΜεγάλουΑλεξάνδρου) were a series of conquests that were carried out by Alexander III of Macedon from 336 BC to 323 BC.

See 0 and Wars of Alexander the Great

## Well-order

In mathematics, a well-order (or well-ordering or well-order relation) on a set is a total ordering on with the property that every non-empty subset of has a least element in this ordering.

See 0 and Well-order

## Xiahou Yang Suanjing

Xiahou Yang Suanjing (Xiahou Yang's Mathematical Manual) is a mathematical treatise attributed to the fifth century CE Chinese mathematician Xiahou Yang.

See 0 and Xiahou Yang Suanjing

## Year zero

A year zero does not exist in the Anno Domini (AD) calendar year system commonly used to number years in the Gregorian calendar (nor in its predecessor, the Julian calendar); in this system, the year is followed directly by year. 0 and year zero are 0 (number).

See 0 and Year zero

## Zeno of Elea

Zeno of Elea (Ζήνων ὁ Ἐλεᾱ́της) was a pre-Socratic Greek philosopher.

## Zeno's paradoxes

Zeno's paradoxes are a series of philosophical arguments presented by the ancient Greek philosopher Zeno of Elea (c. 490–430 BC), primarily known through the works of Plato, Aristotle, and later commentators like Simplicius of Cilicia.

## Zephyrus

In Greek mythology and religion, Zephyrus (westerly wind), also spelled in English as Zephyr, is the god and personification of the West wind, one of the several wind gods, the Anemoi.

See 0 and Zephyrus

## Zero element

In mathematics, a zero element is one of several generalizations of the number zero to other algebraic structures. 0 and zero element are 0 (number).

## Zero morphism

In category theory, a branch of mathematics, a zero morphism is a special kind of morphism exhibiting properties like the morphisms to and from a zero object. 0 and zero morphism are 0 (number).

## Zero of a function

In mathematics, a zero (also sometimes called a root) of a real-, complex-, or generally vector-valued function f, is a member x of the domain of f such that f(x) vanishes at x; that is, the function f attains the value of 0 at x, or equivalently, x is a solution to the equation f(x). 0 and zero of a function are 0 (number).

## Zero to the power of zero

Zero to the power of zero, denoted by, is a mathematical expression that is either defined as 1 or left undefined, depending on context. 0 and zero to the power of zero are 0 (number).

See 0 and Zero to the power of zero

## Zero-based numbering

Zero-based numbering is a way of numbering in which the initial element of a sequence is assigned the index 0, rather than the index 1 as is typical in everyday non-mathematical or non-programming circumstances. 0 and Zero-based numbering are 0 (number).

See 0 and Zero-based numbering

## Zero-point energy

Zero-point energy (ZPE) is the lowest possible energy that a quantum mechanical system may have.

## Zoology

ZoologyThe pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon.

See 0 and Zoology

## 0

0 (zero) is a number representing an empty quantity. 0 and 0 are 0 (number), elementary arithmetic, Indian inventions and integers.

See 0 and 0

## 24-hour clock

The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours.

## See also

### 0 (number)

- 0
- 0.0.0.0
- Additive identity
- Division by zero
- Empty sum
- Leading zero
- List of non-standard dates
- Names for the number 0
- Names for the number 0 in English
- Nilpotent
- Null (mathematics)
- Parity of zero
- Platform 0
- Root-finding algorithms
- Signed zero
- Slashed zero
- Symbols for zero
- Trailing zero
- Year zero
- Zero divisor
- Zero element
- Zero game
- Zero matrix
- Zero morphism
- Zero object (algebra)
- Zero of a function
- Zero ring
- Zero suppression
- Zero to the power of zero
- Zero-based numbering
- Zero-dimensional space
- Zero-energy universe
- Zero-product property

### Elementary arithmetic

- 0
- Addition
- Alligation
- Arithmetic for Parents
- Binary number
- Calculation
- Carry (arithmetic)
- Chunking (division)
- Cube (algebra)
- Decimal
- Division (mathematics)
- Division by two
- Eighth power
- Elementary arithmetic
- Equality (mathematics)
- Fifth power (algebra)
- Finger binary
- Fourth power
- Grid method multiplication
- Irreducible fraction
- Least common multiple
- Lowest common denominator
- Lunar arithmetic
- Means
- Mediant (mathematics)
- Multiplication
- Negative number
- Number bond
- Parity (mathematics)
- Parity of zero
- Percentage
- Plus and minus signs
- Plus–minus sign
- Quotients
- Repeating decimal
- Seventh power
- Sign (mathematics)
- Sixth power
- Square (algebra)
- Square number
- Subtraction
- Trailing zero
- Unit fraction

## References

Also known as 0 (Number), 0**1, 0**10, 0**2, 0**3, 0**4, 0**5, 0**6, 0**7, 0**8, 0**9, 0^1, 0^10, 0^2, 0^3, 0^4, 0^5, 0^6, 0^7, 0^8, 0^9, 0², 0¹⁰, ASCII 48, History of zero, Naught, Nought, Number 0, Number zero, N°0, Sefer (number), Sefr (number), U+0030, Zéro, Zero (math), Zero (mathematics), Zero (maths), Zero (number), Zero function, Zero map, Zero module homomorphism, Zero number, Zeroes, Zeros, \x30, , ٠.

, Cardinality, Category theory, Central processing unit, Charles Seife, Chaturbhuj Temple, Gwalior, Chiapas, Chinese characters of Empress Wu, Chinese numerals, Church of Alexandria, Classic Mac OS, COBOL, Cognitive science, Complex number, Composite number, Computer monitor, Computer programming, Constant function, Cosmology, Counting rods, Cricket, Date of Easter, Decibel, Decimal, Decimal representation, Definition, Digit (unit), Digital electronics, Dionysius Exiguus, Division (mathematics), Division by zero, Dover Publications, Duck (cricket), Eastern Arabic numerals, Edsger W. Dijkstra, Egyptian hieroglyphs, Egyptian numerals, Empty product, Empty set, Empty sum, Epact, Epoch (computing), Error code, Ethiopia, Euclid, Even and odd functions, Evolution, Exit status, Exponentiation, Factorial, FE-Schrift, Fibonacci, Fibonacci Quarterly, Floating-point arithmetic, Fortran, Free variables and bound variables, Geʽez, Glyph, Grammatical number, Greatest element and least element, Greece, Greek numerals, Han dynasty, Hexadecimal, High-level programming language, Hindu–Arabic numeral system, Hinduism, Hindustani numerals, Hipparchus, History of astronomy, History of mathematics, History of printing, IBM 3270, IBM hexadecimal floating-point, Identity element, IEEE 754, Inca Empire, Indeterminate form, Indian mathematics, Indian subcontinent, Initial and terminal objects, Integer, Italian language, Jainism, Java (programming language), Java Database Connectivity, Johannes de Sacrobosco, Kelvin, Khmer numerals, Kish (Sumer), Kratié province, L'Hôpital's rule, Latin, Latins, Lattice (order), Lemma (mathematics), Lens, Limit of a function, Lisp (programming language), Lokavibhaga, Lunar eclipse, Machine code, MacTutor History of Mathematics Archive, Mathematical Association of America, Mathematical constant, Mathematical Treatise in Nine Sections, Mathematics in the medieval Islamic world, Maya civilization, Maya numerals, Medieval Greek, Mekong, Melting point, Mesoamerican Long Count calendar, Middle Ages, Minute and second of arc, Moors, Morse code, Muhammad ibn Ahmad al-Khwarizmi, Multiple (mathematics), Multiplication, Multiplicative inverse, Muslims, Names for the number 0 in English, Natural number, Nefer, Negative temperature, Null (SQL), Null pointer, Number, Number line, Number theory, Numerical digit, O, Old World, Olmecs, Omicron, Ones' complement, Operating system, Order theory, Ordinal number, Origin (mathematics), Oxford English Dictionary, Oxford University Press, Palm OS, Papyrus Boulaq 18, Parity (mathematics), Partially ordered set, Payment card number, PDF, Peano axioms, Persian language, Persians, Pharaoh, Phon, Physical system, Physics, Pingala, Pope Sylvester II, Positional notation, Postal codes in Canada, Power of 10, Prakrit, Prime ideal, Prime number, Princeton University Press, Probability theory, Propositional calculus, Ptolemy, Pythagoras, Qin Jiushao, Quanta Magazine, Quantity, Quantum mechanics, Quatrefoil, Quipu, Radiocarbon dating, Rational number, Real number, Republic of Pisa, Ring (mathematics), Roman numerals, Sanskrit, Sanskrit prosody, Set theory, Sexagesimal, Shaka era, Signed number representations, Signed zero, Sindhi language, Singleton (mathematics), Slang, Slashed zero, Solar eclipse, Sorani, Stationary state, String (computer science), Subtraction, Sunzi Suanjing, Telephone number, Telephone numbering plan, Tennis, Tennis scoring system, Thai numerals, The Guardian, The Nine Chapters on the Mathematical Art, Theoretical astronomy, Thermodynamic temperature, Three-valued logic, Tortoise, Trachea, Truth value, Turtle shell, Two's complement, Typeface, Typewriter, Undefined (mathematics), Unix time, Vacuum, Vector space, Vehicle registration plates of Germany, Vigesimal, Von Neumann cardinal assignment, W. W. Norton & Company, Walter Eugene Clark, Wars of Alexander the Great, Well-order, Xiahou Yang Suanjing, Year zero, Zeno of Elea, Zeno's paradoxes, Zephyrus, Zero element, Zero morphism, Zero of a function, Zero to the power of zero, Zero-based numbering, Zero-point energy, Zoology, 0, 24-hour clock.