common substitution
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Substitution cipher — In cryptography, a substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system; the units may be single letters (the most common), pairs of letters, triplets of letters,… … Wikipedia
Substitution model — A substitution model describes the process from which a sequence of characters of a fixed size from some alphabet changes into another set of traits. For example, in cladistics, each position in the sequence might correspond to a property of a… … Wikipedia
Substitution of variables — In mathematics, substitution of variables (also called variable substitution or coordinate transformation) refers to the substitution of certain variables with other variables. Though the study of how variable substitutions affect a certain… … Wikipedia
Substitution matrix — In evolutionary biology, a substitution matrix describes the rate at which one character in a sequence changes to other character states over time. Substitution matrices are usually seen in the context of amino acid or DNA sequence alignments,… … Wikipedia
Substitution (law) — In legal terms, the Right of Substitution is a statutory right of all parties except the State. It is the right to change the presiding court official with or without cause.Judges are usually given cases randomly within a jurisdiction (unless… … Wikipedia
Common Era — BCE redirects here. For other uses, see BCE (disambiguation). Era Vulgaris redirects here. For the Queens of the Stone Age album, see Era Vulgaris (album). Common Era (sometimes Current Era[1] or Christian Era[2]), abbreviated as CE, is an… … Wikipedia
Common reagents — This is a list of common inorganic and organic reagents often used in chemistry. Contents 1 Synopsis 2 Reagent Compounds 3 See also 4 References S … Wikipedia
substitution — sub|sti|tu|tion [ˌsʌbstıˈtju:ʃən US ˈtu: ] n [U and C] when someone or something is replaced by someone or something else ▪ Coach Ross made two substitutions in the second half. substitution of sth for sth ▪ the substitution of English for French … Dictionary of contemporary English
Common integrals in quantum field theory — There are common integrals in quantum field theory that appear repeatedly.[1] These integrals are all variations and generalizations of gaussian integrals to the complex plane and to multiple dimensions. Other integrals can be approximated by… … Wikipedia
Substitution-permutation network — In cryptography, an SP network, or substitution permutation network (SPN), is a series of linked mathematical operations used in block cipher algorithms such as AES.These networks consist of S boxes and P boxes that transform blocks of input bits … Wikipedia
