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even permutation

American

noun

Mathematics.

a permutation of a set of n elements, x 1 , x 2 , … xn, that leaves unchanged the product of all differences of the form (x i — xj ), where i is less than j.

First recorded in 1930–35

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023