permutation

/P ER0 M Y UW0 T EY1 SH AH0 N/

noun

1
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
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
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
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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