Parity of a Permutation

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High Quality Content by WIKIPEDIA articles! In mathematics, when X is a finite set of at least two elements, the permutations of X (i.e. the bijective mappings from X to X) fall into two classes of equal size: the even permutations and the odd permutations. If any total ordering of X is fixed, the parity (oddness or evenness) of a permutation of X can be defined as the parity of the number of inversions for , i.e., of pairs of elements x,y of X such that x y and (x) (y). The sign or signature of a permutation is denoted sgn( ) and defined as +1 if is even and 1 if is odd. The signature defines the alternating character of the symmetric group Sn. Another notation for the sign of a permutation is given by the more general Levi-Civita symbol ( ), which is defined for all maps from X to X, and has value zero for non-bijective maps.

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786130335649
    • Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
    • Sprache Englisch
    • Größe H220mm x B150mm x T5mm
    • Jahr 2010
    • EAN 9786130335649
    • Format Kartonierter Einband
    • ISBN 978-613-0-33564-9
    • Titel Parity of a Permutation
    • Untertitel Mathematics, Finite Set, Permutation, Total Order, Symmetric Group, Transposition (mathematics), Function Composition, Group Homomorphism, Alternating Group, Length Function
    • Gewicht 142g
    • Herausgeber Betascript Publishers
    • Anzahl Seiten 84
    • Genre Mathematik

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