permutation index

См. также в других словарях:

• permutation — index exchange, mutuality Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

• Permutation — For other uses, see Permutation (disambiguation). The 6 permutations of 3 balls In mathematics, the notion of permutation is used with several slightly different meanings, all related to the act of permuting (rearranging) objects or values.… …   Wikipedia

• Permutation group — In mathematics, a permutation group is a group G whose elements are permutations of a given set M , and whose group operation is the composition of permutations in G (which are thought of as bijective functions from the set M to itself); the… …   Wikipedia

• Permutation graph — In areas of mathematics influenced by graph theory, a permutation graph is the intersection graph of a family of line segments that connect two parallel lines in the Euclidean plane. Equivalently, given a permutation ( sigma;1, sigma;2, sigma;3 …   Wikipedia

• Index of coincidence — In cryptography, coincidence counting is the technique (invented by William F. Friedman[1]) of putting two texts side by side and counting the number of times that identical letters appear in the same position in both texts. This count, either as …   Wikipedia

• Cycle index — In mathematics, and in particular in the field of combinatorics, cycle indices are used in combinatorial enumeration when symmetries are to be taken into account. This is particularly important in species theory. Each permutation π of a finite… …   Wikipedia

• Bit-reversal permutation — Product of Gray code permutation and bit reversal permutation (4 bit) (The result permutes a natural ordered into a sequence ordered Hadamard matrix.) In applied mathematics, a bit reversal permutation is a permutation of a sequence with… …   Wikipedia

• Generalized permutation matrix — In mathematics, a generalized permutation matrix (or monomial matrix) is a matrix with the same nonzero pattern as a permutation matrix, i.e. there is exactly one nonzero entry in each row and each column. Unlike a permutation matrix, where the… …   Wikipedia

• List of permutation topics — This is a list of topics on mathematical permutations.*Alternating group *Alternating permutation *Bijection *Circular shift *Combination *Cycle index *Cycle notation *Cyclic order *Cyclic permutation *Derangement *Even and odd permutations… …   Wikipedia

• Chromatischer Index — Dieses Stichwortverzeichnis enthält kurze Definitionen und Erklärungen zu den wichtigsten graphentheoretischen Begriffen. A Abstand Siehe: Distanz. Achromatische Zahl Die achromatische Zahl ψ(G) eines Graphen G ist die größte Zahl k, für die G… …   Deutsch Wikipedia

• Abstract index notation — is a mathematical notation for tensors and spinors that uses indices to indicate their types, rather than their components in a particular basis. The indices are mere placeholders, not related to any fixed basis, and in particular are non… …   Wikipedia