SignedPermutation from Permutation

A permutation as the signed permutation with every sign positive.

Permutation → SignedPermutation

FindStat's Mp00170.

Called as CombinatorialMap(x, "SignedPermutation"). The head's page has its examples.

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Explore

Each element of Permutation at a size, and its image, applied in your browser; sizes past 7 are not offered.

Size

Properties

Sizes 1 to

Transport a statistic

Pick a statistic on SignedPermutation. Its distribution over the images of Permutation at each size is computed, and compared with the 323 statistics on Permutation: those that share it are the ones the map sends it to, as far as the sizes computed show.

Statistic NegativeEntryCountPositiveEntryCountTypeBInversionCountNegativeSumPairCountFlagMajorIndexFlagDescentFlagExcedanceFlagWeakExcedancePositiveBeforeLargerNegativePairCountIncreasingPositivePairCountPositiveBeforeNegativeCountRightDescentsSignedPermutationOrderSignedReflectionLengthFlagDenertIndexSignedSortingIndexSignedAlignmentCountStasinskiVollLength Sizes 1 to

FindStat Mp00170

to signed permutation

Matched by value: our map agrees with FindStat's image on each of the 873 rows of size at most 6 we can read (0 unread; its table has 1200 rows).

InjectionGraded mapas FindStat records them, checked by FindStat's contributors.

The signed permutation with all signs positive.

Object	Image
[1]	[1]
[1,2]	[1,2]
[2,1]	[2,1]
[1,2,3]	[1,2,3]

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/Mp00170 has the rest.