Bijection

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In mathematics, a bijection, or a bijective function is a function f from a set X to a set Y with the property that, for every y in Y, there is exactly one x in X such that f(x) = y and no unmapped element exists in either X or Y.Alternatively, f is bijective if it is a one-to-one correspondence between those sets, both one-to-one (injective) and onto (surjective). (One-to-one function means one-to-one correspondence (i.e., bijection) to some authors, but injection to others.)For example, consider the function succ, defined from the set of integers Z to Z, that to each integer x associates the integer succ(x) = x + 1. For another example, consider the function sumdif that to each pair (x,y) of real numbers associates the pair sumdif(x,y) = (x + y, x y).

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786130646813
    • Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
    • Sprache Englisch
    • Größe H220mm x B150mm x T7mm
    • Jahr 2010
    • EAN 9786130646813
    • Format Fachbuch
    • ISBN 978-613-0-64681-3
    • Titel Bijection
    • Untertitel Function (mathematics), Set (mathematics), Surjective function, Injective function, Integer, Permutation, Isomorphism, Homography, Permutation group
    • Gewicht 197g
    • Herausgeber Alphascript Publishing
    • Anzahl Seiten 120
    • Genre Mathematik

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