permutation

nounB2

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Danh từ

noun

Plural noun:

permutations

1.
(countable, uncountable)One of the ways something exists, or the ways a set of objects can be ordered.
Which permutation for completing our agenda items makes the most sense?
2.
(countable, uncountable)(mathematics) A one-to-one mapping from a finite set to itself.
This permutation takes each element to the one following it, with the last mapped back to the first.
3.
(countable, uncountable)(mathematics, combinatorics) An ordering of a finite set of distinct elements.
There are six permutations of three elements, e.g. {abc, acb, bac, bca, cab, cba}.
4.
(countable, uncountable)(music) A transformation of a set's prime form, by applying one or more of certain operations, specifically, transposition, inversion, and retrograde.

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multipermutationpermutationalsubpermutationsuperpermutationvexillary permutationpermutation boxpermutation grouppermutation locksimsun permutationcombinationcombinatorics combination

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Nguồn gốc từ

From Middle English permutacioun, permutacyoun, from Old French permutacïon, promutatïon and permūtātiōnem, accusative of permūtātiō. Morphologically permute + -ation.