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15 (number)

Index 15 (number)

15 (fifteen) is a number, numeral, and glyph. [1]

74 relations: Age of majority, Atomic number, Bell number, Binary number, Binary tree, Bingo (U.S.), Brady Haran, British Board of Film Classification, Camogie, Complete graph, Composite number, Constructible number, Constructible polygon, Divisor, Donax variabilis, Driver's license, Fearless (Taylor Swift album), Fermat number, Gaelic football, Gaelic games, Group (periodic table), GSM, Hanbali, He (letter), Hebrew calendar, Hebrew language, Hebrew numerals, Hexadecimal, Hexagonal number, Hurling, Indonesia, Jewish holidays, Ladies' Gaelic football, List of highways numbered 15, List of numeral systems, Magic constant, Magic square, Matching (graph theory), Minor (law), Myanmar, Nisan, Pakistan, Passover, Pentatope number, Periodic table, Phenotype, Phosphorus, Pnictogen, Prime quadruplet, Quaternary numeral system, ..., Quinceañera, Regular polygon, Repdigit, Rugby union, Sexual intercourse, Shevat, Shor's algorithm, Subscriber identity module, Sukkot, Supersingular prime (moonshine theory), Taylor Swift, Tennis, Teth, The Penguin Dictionary of Curious and Interesting Numbers, Tishrei, Triangular number, Trigonometric functions, Tu BiShvat, Waw (letter), Yemen, Yodh, 15 and 290 theorems, 15 puzzle, 16 (number). Expand index (24 more) »

Age of majority

The age of majority is the threshold of adulthood as recognized or declared in law.

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Atomic number

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.

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Bell number

In combinatorial mathematics, the Bell numbers count the possible partitions of a set.

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Binary number

In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 (zero) and 1 (one).

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Binary tree

In computer science, a binary tree is a tree data structure in which each node has at most two children, which are referred to as the and the.

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Bingo (U.S.)

In the United States, Bingo is a game of chance in which each player matches numbers printed in different arrangements on 5×5 cards with the numbers the game host (caller) draws at random, marking the selected numbers with tiles.

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Brady Haran

Brady John Haran (born 18 June 1976) is an Australian-born British independent filmmaker and video journalist who is known for his educational videos and documentary films produced for BBC News and his YouTube channels, the most notable being Periodic Videos and Numberphile.

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British Board of Film Classification

The British Board of Film Classification (BBFC), previously the British Board of Film Censors, is a non-governmental organization, founded by the film industry in 1912 and responsible for the national classification and censorship of films exhibited at cinemas and video works (such as television programmes, trailers, adverts, public Information/campaigning films, menus, bonus content etc.) released on physical media within the United Kingdom.

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Camogie (camógaíocht) is an Irish stick-and-ball team sport played by women; it is almost identical to the game of hurling played by men.

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Complete graph

No description.

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Composite number

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

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Constructible number

In geometry and algebra, a real number is constructible if and only if, given a line segment of unit length, a line segment of length || can be constructed with compass and straightedge in a finite number of steps.

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Constructible polygon

In mathematics, a constructible polygon is a regular polygon that can be constructed with compass and straightedge.

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In mathematics, a divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n. In this case, one also says that n is a multiple of m. An integer n is divisible by another integer m if m is a divisor of n; this implies dividing n by m leaves no remainder.

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Donax variabilis

Donax variabilis, known by the common name coquina, is a species of small edible saltwater clam, a marine bivalve mollusc in the family Donacidae, the bean clams.

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Driver's license

A driver's license is an official document permitting a specific individual to operate one or more types of motorized vehicles, such as a motorcycle, car, truck, or bus on a public road.

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Fearless (Taylor Swift album)

Fearless is the second studio album by the American singer-songwriter Taylor Swift.

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Fermat number

In mathematics a Fermat number, named after Pierre de Fermat who first studied them, is a positive integer of the form where n is a nonnegative integer.

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Gaelic football

Gaelic football (Irish: Peil Ghaelach; short name Peil or Caid), commonly referred to as football or Gaelic, is an Irish team sport.

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Gaelic games

Gaelic games are sports played in Ireland under the auspices of the Gaelic Athletic Association (GAA).

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Group (periodic table)

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements.

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GSM (Global System for Mobile communications) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as tablets, first deployed in Finland in December 1991.

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The Hanbali school (المذهب الحنبلي) is one of the four traditional Sunni Islamic schools of jurisprudence (fiqh).

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He (letter)

He is the fifth letter of the Semitic abjads, including Phoenician Hē, Hebrew Hē, Aramaic Hē, Syriac Hē ܗ, and Arabic ﻫ. Its sound value is a voiceless glottal fricative.

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Hebrew calendar

The Hebrew or Jewish calendar (Ha-Luah ha-Ivri) is a lunisolar calendar used today predominantly for Jewish religious observances.

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Hebrew language

No description.

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Hebrew numerals

The system of Hebrew numerals is a quasi-decimal alphabetic numeral system using the letters of the Hebrew alphabet.

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In mathematics and computing, hexadecimal (also base, or hex) is a positional numeral system with a radix, or base, of 16.

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Hexagonal number

A hexagonal number is a figurate number.

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Hurling (iománaíocht, iomáint) is an outdoor team game of ancient Gaelic and Irish origin.

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Indonesia (or; Indonesian), officially the Republic of Indonesia (Republik Indonesia), is a transcontinental unitary sovereign state located mainly in Southeast Asia, with some territories in Oceania.

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Jewish holidays

Jewish holidays, also known as Jewish festivals or Yamim Tovim ("Good Days", or singular Yom Tov, in transliterated Hebrew), are holidays observed in Judaism and by JewsThis article focuses on practices of mainstream Rabbinic Judaism.

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Ladies' Gaelic football

Ladies' Gaelic football (Peil Ghaelach na mBan) is a team sport for women, very similar to Gaelic football, and co-ordinated by the Ladies' Gaelic Football Association.

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List of highways numbered 15

Route 15, or Highway 15, can refer to: For roads named A15, see A15 roads.

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List of numeral systems

This is a list of numeral systems, that is, writing systems for expressing numbers.

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Magic constant

The magic constant or magic sum of a magic square is the sum of numbers in any row, column, or diagonal of the magic square.

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Magic square

In recreational mathematics and combinatorial design, a magic square is a n\times n square grid (where is the number of cells on each side) filled with distinct positive integers in the range 1,2,...,n^2 such that each cell contains a different integer and the sum of the integers in each row, column and diagonal is equal.

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Matching (graph theory)

In the mathematical discipline of graph theory, a matching or independent edge set in a graph is a set of edges without common vertices.

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Minor (law)

In law, a minor is a person under a certain age, usually the age of majority, which legally demarcates childhood from adulthood.

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Myanmar, officially the Republic of the Union of Myanmar and also known as Burma, is a sovereign state in Southeast Asia.

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Nisan (or Nissan; נִיסָן, Standard Nisan Tiberian Nîsān) on the Assyrian calendar is the first month, and on the Hebrew calendar is the first month of the ecclesiastical year and the seventh month (eighth, in leap year) of the civil year.

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Pakistan (پاکِستان), officially the Islamic Republic of Pakistan (اِسلامی جمہوریہ پاکِستان), is a country in South Asia.

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Passover or Pesach (from Hebrew Pesah, Pesakh) is a major, biblically derived Jewish holiday.

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Pentatope number

A pentatope number is a number in the fifth cell of any row of Pascal's triangle starting with the 5-term row 1 4 6 4 1 either from left to right or from right to left.

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Periodic table

The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.

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A phenotype is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, behavior, and products of behavior (such as a bird's nest).

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Phosphorus is a chemical element with symbol P and atomic number 15.

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A pnictogen is one of the chemical elements in group 15 of the periodic table.

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Prime quadruplet

A prime quadruplet (sometimes called prime quadruple) is a set of four primes of the form.

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Quaternary numeral system

Quaternary is the base- numeral system.

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The fiesta de quince años (also fiesta de quinceañera, quince años and quince) is a celebration of a girl's 15th birthday.

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Regular polygon

In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).

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In recreational mathematics, a repdigit or sometimes monodigit is a natural number composed of repeated instances of the same digit in a positional number system (often implicitly decimal).

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Rugby union

Rugby union, commonly known in most of the world as rugby, is a contact team sport which originated in England in the first half of the 19th century.

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Sexual intercourse

Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.

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Shevat (Hebrew: שְׁבָט, Standard Šəvat Tiberian Šəḇāṭ; from Akkadian Šabātu) is the fifth month of the civil year starting in Tishre (or Tishri) and the eleventh month of the ecclesiastical year on the Hebrew calendar starting in Nisan.

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Shor's algorithm

Shor's algorithm, named after mathematician Peter Shor, is a quantum algorithm (an algorithm that runs on a quantum computer) for integer factorization formulated in 1994.

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Subscriber identity module

A subscriber identity module or subscriber identification module (SIM), widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers).

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Sukkot (סוכות or סֻכּוֹת,, commonly translated as Feast of Tabernacles or Feast of the Ingathering, traditional Ashkenazi pronunciation Sukkos or Succos, literally Feast of Booths) is a biblical Jewish holiday celebrated on the 15th day of the seventh month, Tishrei (varies from late September to late October).

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Supersingular prime (moonshine theory)

In the mathematical branch of moonshine theory, a supersingular prime is a prime number that divides the order of the Monster group M, which is the largest sporadic simple group.

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Taylor Swift

Taylor Alison Swift (born December 13, 1989) is an American singer-songwriter.

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

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Teth, also written as or Tet, is the ninth letter of the Semitic abjads, including Phoenician Ṭēt, Hebrew Ṭēt, Aramaic Ṭēth, Syriac Ṭēṯ ܛ, and Arabic ط. It is 16th in modern Arabic order.

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The Penguin Dictionary of Curious and Interesting Numbers

The Penguin Dictionary of Curious and Interesting Numbers is a reference book for recreational mathematics and elementary number theory written by David Wells.

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Tishrei (or Tishri; תִּשְׁרֵי tishré or tishrí); from Akkadian tašrītu "Beginning", from šurrû "To begin") is the first month of the civil year (which starts on 1 Tishrei) and the seventh month of the ecclesiastical year (which starts on 1 Nisan) in the Hebrew calendar. The name of the month is Babylonian. It is an autumn month of 30 days. Tishrei usually occurs in September–October on the Gregorian calendar. In the Hebrew Bible, before the Babylonian Exile, the month is called Ethanim (אֵתָנִים -). Edwin R. Thiele has concluded, in The Mysterious Numbers of the Hebrew Kings, that the ancient Kingdom of Judah counted years using the civil year starting in Tishrei, while the Kingdom of Israel counted years using the ecclesiastical new year starting in Nisan. Tishrei is the month used for the counting of the epoch year - i.e., the count of the year is incremented on 1 Tishrei.

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Triangular number

A triangular number or triangle number counts objects arranged in an equilateral triangle, as in the diagram on the right.

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Trigonometric functions

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.

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Tu BiShvat

Tu BiShvat (ט״ו בשבט) is a Jewish holiday occurring on the 15th day of the Hebrew month of Shevat (in 2018, Tu BiShvat begins at sunset on January 30 and ends at nightfall on January 31).

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Waw (letter)

Waw/Vav ("hook") is the sixth letter of the Semitic abjads, including Phoenician wāw, Aramaic waw, Hebrew vav, Syriac waw ܘ and Arabic wāw و (sixth in abjadi order; 27th in modern Arabic order).

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Yemen (al-Yaman), officially known as the Republic of Yemen (al-Jumhūriyyah al-Yamaniyyah), is an Arab sovereign state in Western Asia at the southern end of the Arabian Peninsula.

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Yodh (also spelled yud, yod, jod, or jodh) is the tenth letter of the Semitic abjads, including Phoenician Yōd, Hebrew Yōd, Aramaic Yodh, Syriac Yōḏ ܚ, and Arabic ي (in abjadi order, 28th in modern order).

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15 and 290 theorems

The 15 theorem or Conway–Schneeberger Fifteen Theorem, proved by John H. Conway and W. A. Schneeberger in 1993, states that if a positive definite quadratic form with integer matrix represents all positive integers up to 15, then it represents all positive integers.

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15 puzzle

The 15-puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and many others) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing.

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16 (number)

16 (sixteen) is the natural number following 15 and preceding 17.

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[1] https://en.wikipedia.org/wiki/15_(number)

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