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  2. Absolute infinite - Wikipedia

    en.wikipedia.org/wiki/Absolute_Infinite

    The absolute infinite (symbol: Ω), in context often called "absolute", is an extension of the idea of infinity proposed by mathematician Georg Cantor. It can be thought of as a number that is bigger than any other conceivable or inconceivable quantity, either finite or transfinite .

  3. c space - Wikipedia

    en.wikipedia.org/wiki/C_space

    In the mathematical field of functional analysis, the space denoted by c is the vector space of all convergent sequences of real numbers or complex numbers. When equipped with the uniform norm : ‖ x ‖ ∞ = sup n | x n | {\displaystyle \|x\|_{\infty }=\sup _{n}|x_{n}|} the space c {\displaystyle c} becomes a Banach space .

  4. Baire space (set theory) - Wikipedia

    en.wikipedia.org/wiki/Baire_space_(set_theory)

    Such a space is called a Baire space of weight and can be denoted as (). [1] With this definition, the Baire spaces of finite weight would correspond to the Cantor space . The first Baire space of infinite weight is then B ( ℵ 0 ) {\displaystyle B(\aleph _{0})} ; it is homeomorphic to ω ω {\displaystyle \omega ^{\omega }} defined above.

  5. Norm (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Norm_(mathematics)

    The Euclidean norm of a complex number is the absolute value (also called the modulus) of it, if the complex plane is identified with the Euclidean plane. This identification of the complex number x + i y {\displaystyle x+iy} as a vector in the Euclidean plane, makes the quantity x 2 + y 2 {\textstyle {\sqrt {x^{2}+y^{2}}}} (as first suggested ...

  6. Glossary of set theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_set_theory

    absolute 1. A statement is called absolute if its truth in some model implies its truth in certain related models 2. Cantor's absolute is a somewhat unclear concept sometimes used to mean the class of all sets 3. Cantor's Absolute infinite Ω is a somewhat unclear concept related to the class of all ordinals AC 1. AC is the Axiom of choice 2.

  7. Matrix norm - Wikipedia

    en.wikipedia.org/wiki/Matrix_norm

    Suppose a vector norm ‖ ‖ on and a vector norm ‖ ‖ on are given. Any matrix A induces a linear operator from to with respect to the standard basis, and one defines the corresponding induced norm or operator norm or subordinate norm on the space of all matrices as follows: ‖ ‖, = {‖ ‖: ‖ ‖ =} = {‖ ‖ ‖ ‖:} . where denotes the supremum.

  8. Apeirogon - Wikipedia

    en.wikipedia.org/wiki/Apeirogon

    Given a point A 0 in a Euclidean space and a translation S, define the point A i to be the point obtained from i applications of the translation S to A 0, so A i = S i (A 0).The set of vertices A i with i any integer, together with edges connecting adjacent vertices, is a sequence of equal-length segments of a line, and is called the regular apeirogon as defined by H. S. M. Coxeter.

  9. Leavitt path algebra - Wikipedia

    en.wikipedia.org/wiki/Leavitt_path_algebra

    A vertex is called a singular vertex if it is either a sink or an infinite emitter, and a vertex is called a regular vertex if it is not a singular vertex. Note that a vertex v {\displaystyle v} is regular if and only if the number of edges in E {\displaystyle E} with source v {\displaystyle v} is finite and nonzero.