bijective function
11Bent function — The 2 ary bent functions with Hamming weight 1 Their nonlinearity is …
12T-function — In cryptography, a T function is a bijective mapping that updates every bit of the state in a way that can be described as x i = x i + f(x 0, cdots, x {i 1}), or in simple words an update function in which each bit of the state is updated by a… …
13Coercive function — In mathematics, a coercive function is a function that grows rapidly at the extremes of the space on which it is defined. More precisely, a function f : Rn → Rn is called coercive if where denotes the usual dot product and denotes the usual… …
14Bijection — A bijective function, f:X→Y, where set X is {1, 2, 3, 4} and set Y is {A, B, C, D}. For example, f(1) = D. A bijection (or bijective function or one to one correspondence) is a function giving an exact pairing of the elements of two… …
15Bijection, injection and surjection — In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each… …
16Isomorphism — In abstract algebra, an isomorphism (Greek: ἴσος isos equal , and μορφή morphe shape ) is a bijective map f such that both f and its inverse f −1 are homomorphisms, i.e., structure preserving mappings.In the more general setting of category… …
17Combinatorial principles — In proving results in combinatorics several useful combinatorial rules or combinatorial principles are commonly recognized and used. The rule of sum, rule of product, and inclusion exclusion principle are often used for enumerative purposes.… …
18Countable set — Countable redirects here. For the linguistic concept, see Count noun. Not to be confused with (recursively) enumerable sets. In mathematics, a countable set is a set with the same cardinality (number of elements) as some subset of the set of… …
19Glossary of topology — This is a glossary of some terms used in the branch of mathematics known as topology. Although there is no absolute distinction between different areas of topology, the focus here is on general topology. The following definitions are also… …
20Unit disk — For other uses, see Disc (disambiguation). An open Euclidean unit disk In mathematics, the open unit disk (or disc) around P (where P is a given point in the plane), is the set of points whose distance from P is less than 1 …
