odd permutation

noun Mathematics.

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.

Compare even permutation.

Origin of odd permutation

First recorded in 1925–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018