Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

Extended real number line

Index Extended real number line

In mathematics, the affinely extended real number system is obtained from the real number system by adding two elements: and (read as positive infinity and negative infinity respectively). [1]

39 relations: Absolute value, Asymptote, Calculus, Compact space, Complete lattice, Continuous function, Division by zero, Dominated convergence theorem, Field (mathematics), Function (mathematics), Group (mathematics), Hausdorff space, Homeomorphism, IEEE 754, Improper integral, Indeterminate form, Infimum and supremum, Infinity, Integral, Limit of a function, Mathematical analysis, Mathematics, Measure (mathematics), Metrization theorem, Monotone convergence theorem, Neighbourhood (mathematics), Order topology, Projectively extended real line, Real number, Riemann sphere, Ring (mathematics), Semigroup, Semiring, Series (mathematics), Singularity (mathematics), Topology, Total order, Undefined (mathematics), Unit interval.

Absolute value

In mathematics, the absolute value or modulus of a real number is the non-negative value of without regard to its sign.

New!!: Extended real number line and Absolute value · See more »

Asymptote

In analytic geometry, an asymptote of a curve is a line such that the distance between the curve and the line approaches zero as one or both of the x or y coordinates tends to infinity.

New!!: Extended real number line and Asymptote · See more »

Calculus

Calculus (from Latin calculus, literally 'small pebble', used for counting and calculations, as on an abacus), is the mathematical study of continuous change, in the same way that geometry is the study of shape and algebra is the study of generalizations of arithmetic operations.

New!!: Extended real number line and Calculus · See more »

Compact space

In mathematics, and more specifically in general topology, compactness is a property that generalizes the notion of a subset of Euclidean space being closed (that is, containing all its limit points) and bounded (that is, having all its points lie within some fixed distance of each other).

New!!: Extended real number line and Compact space · See more »

Complete lattice

In mathematics, a complete lattice is a partially ordered set in which all subsets have both a supremum (join) and an infimum (meet).

New!!: Extended real number line and Complete lattice · See more »

Continuous function

In mathematics, a continuous function is a function for which sufficiently small changes in the input result in arbitrarily small changes in the output.

New!!: Extended real number line and Continuous function · See more »

Division by zero

In mathematics, division by zero is division where the divisor (denominator) is zero.

New!!: Extended real number line and Division by zero · See more »

Dominated convergence theorem

In measure theory, Lebesgue's dominated convergence theorem provides sufficient conditions under which almost everywhere convergence of a sequence of functions implies convergence in the L1 norm.

New!!: Extended real number line and Dominated convergence theorem · See more »

Field (mathematics)

In mathematics, a field is a set on which addition, subtraction, multiplication, and division are defined, and behave as when they are applied to rational and real numbers.

New!!: Extended real number line and Field (mathematics) · See more »

Function (mathematics)

In mathematics, a function was originally the idealization of how a varying quantity depends on another quantity.

New!!: Extended real number line and Function (mathematics) · See more »

Group (mathematics)

In mathematics, a group is an algebraic structure consisting of a set of elements equipped with an operation that combines any two elements to form a third element and that satisfies four conditions called the group axioms, namely closure, associativity, identity and invertibility.

New!!: Extended real number line and Group (mathematics) · See more »

Hausdorff space

In topology and related branches of mathematics, a Hausdorff space, separated space or T2 space is a topological space in which distinct points have disjoint neighbourhoods.

New!!: Extended real number line and Hausdorff space · See more »

Homeomorphism

In the mathematical field of topology, a homeomorphism or topological isomorphism or bi continuous function is a continuous function between topological spaces that has a continuous inverse function.

New!!: Extended real number line and Homeomorphism · See more »

IEEE 754

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

New!!: Extended real number line and IEEE 754 · See more »

Improper integral

In mathematical analysis, an improper integral is the limit of a definite integral as an endpoint of the interval(s) of integration approaches either a specified real number, \infty, -\infty, or in some instances as both endpoints approach limits.

New!!: Extended real number line and Improper integral · See more »

Indeterminate form

In calculus and other branches of mathematical analysis, limits involving an algebraic combination of functions in an independent variable may often be evaluated by replacing these functions by their limits; if the expression obtained after this substitution does not give enough information to determine the original limit, it is said to take on an indeterminate form.

New!!: Extended real number line and Indeterminate form · See more »

Infimum and supremum

In mathematics, the infimum (abbreviated inf; plural infima) of a subset S of a partially ordered set T is the greatest element in T that is less than or equal to all elements of S, if such an element exists.

New!!: Extended real number line and Infimum and supremum · See more »

Infinity

Infinity (symbol) is a concept describing something without any bound or larger than any natural number.

New!!: Extended real number line and Infinity · See more »

Integral

In mathematics, an integral assigns numbers to functions in a way that can describe displacement, area, volume, and other concepts that arise by combining infinitesimal data.

New!!: Extended real number line and Integral · See more »

Limit of a function

Although the function (sin x)/x is not defined at zero, as x becomes closer and closer to zero, (sin x)/x becomes arbitrarily close to 1.

New!!: Extended real number line and Limit of a function · See more »

Mathematical analysis

Mathematical analysis is the branch of mathematics dealing with limits and related theories, such as differentiation, integration, measure, infinite series, and analytic functions.

New!!: Extended real number line and Mathematical analysis · See more »

Mathematics

Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.

New!!: Extended real number line and Mathematics · See more »

Measure (mathematics)

In mathematical analysis, a measure on a set is a systematic way to assign a number to each suitable subset of that set, intuitively interpreted as its size.

New!!: Extended real number line and Measure (mathematics) · See more »

Metrization theorem

In topology and related areas of mathematics, a metrizable space is a topological space that is homeomorphic to a metric space.

New!!: Extended real number line and Metrization theorem · See more »

Monotone convergence theorem

In the mathematical field of real analysis, the monotone convergence theorem is any of a number of related theorems proving the convergence of monotonic sequences (sequences that are increasing or decreasing) that are also bounded.

New!!: Extended real number line and Monotone convergence theorem · See more »

Neighbourhood (mathematics)

In topology and related areas of mathematics, a neighbourhood (or neighborhood) is one of the basic concepts in a topological space.

New!!: Extended real number line and Neighbourhood (mathematics) · See more »

Order topology

In mathematics, an order topology is a certain topology that can be defined on any totally ordered set.

New!!: Extended real number line and Order topology · See more »

Projectively extended real line

In real analysis, the projectively extended real line (also called the one-point compactification of the real line), is the extension of the number line by a point denoted.

New!!: Extended real number line and Projectively extended real line · See more »

Real number

In mathematics, a real number is a value of a continuous quantity that can represent a distance along a line.

New!!: Extended real number line and Real number · See more »

Riemann sphere

In mathematics, the Riemann sphere, named after Bernhard Riemann, is a model of the extended complex plane, the complex plane plus a point at infinity.

New!!: Extended real number line and Riemann sphere · See more »

Ring (mathematics)

In mathematics, a ring is one of the fundamental algebraic structures used in abstract algebra.

New!!: Extended real number line and Ring (mathematics) · See more »

Semigroup

In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation.

New!!: Extended real number line and Semigroup · See more »

Semiring

In abstract algebra, a semiring is an algebraic structure similar to a ring, but without the requirement that each element must have an additive inverse.

New!!: Extended real number line and Semiring · See more »

Series (mathematics)

In mathematics, a series is, roughly speaking, a description of the operation of adding infinitely many quantities, one after the other, to a given starting quantity.

New!!: Extended real number line and Series (mathematics) · See more »

Singularity (mathematics)

In mathematics, a singularity is in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability.

New!!: Extended real number line and Singularity (mathematics) · See more »

Topology

In mathematics, topology (from the Greek τόπος, place, and λόγος, study) is concerned with the properties of space that are preserved under continuous deformations, such as stretching, crumpling and bending, but not tearing or gluing.

New!!: Extended real number line and Topology · See more »

Total order

In mathematics, a linear order, total order, simple order, or (non-strict) ordering is a binary relation on some set X, which is antisymmetric, transitive, and a connex relation.

New!!: Extended real number line and Total order · See more »

Undefined (mathematics)

In mathematics, undefined has several different meanings, depending on the context.

New!!: Extended real number line and Undefined (mathematics) · See more »

Unit interval

In mathematics, the unit interval is the closed interval, that is, the set of all real numbers that are greater than or equal to 0 and less than or equal to 1.

New!!: Extended real number line and Unit interval · See more »

Redirects here:

+∞, -∞, Affine infinity, Affinely extended real number line, Affinely extended real number system, Affinely extended real numbers, Exended real, Extended number, Extended real, Extended real line, Extended real number, Extended real number system, Extended real numbers, Extended reals, Minus infinity, Negative infinity, Positive infinity, Upper-extended real line, −∞.

References

[1] https://en.wikipedia.org/wiki/Extended_real_number_line

OutgoingIncoming
Hey! We are on Facebook now! »