UnderlyingPermutation

The permutation left when the signs are forgotten.

FindStatMp00163via SignedPermutation↗

UnderlyingPermutation(SignedPermutation)The permutation left when the signs are forgotten.

Typed signatures

Type	Package	Applies
(signed_permutation) -> permutation	combinatorics	always

Domain: Combinatorial maps

Details

• Takes a SignedPermutation and returns a Permutation — a typed map, so a wrong carrier is a type error rather than a wrong answer.
• FindStat's Mp00163. Lossy: the signs are forgotten, so it is not a constructor overload.

Examples

Basic #

the signed permutation $2\,\bar 3\,1$

live ↗

In$\mathrm{UnderlyingPermutation}({\operatorname{SignedPermutation}}([2, -3, 1]))$Out${\operatorname{Permutation}}([2, 3, 1])$

About

Examples	1
Crosswalk	FindStat