Dictionary
odd' permuta'tion
Math.
a permutation of a set of
n elements,
x1,
x2, … ,
xn, which permutes the product of all differences of the form (
xi–
xj), where
i is less than
j, into the negative of the product. Cf.
even permutation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.