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IncreasingCyclePermutation from SetPartition ​

The permutation whose cycles are the blocks, each cycle increasing: every element goes to the next larger in its block, the largest to the least.

SetPartition → Permutation

FindStat's Mp00080, Sage's to_permutation. Injective; it maximizes the exceedances among the permutations with these cycles.

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

Live

Explore

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

Properties

Transport a statistic

Pick a statistic on Permutation. Its distribution over the images of SetPartition at each size is computed, and compared with the 111 statistics on SetPartition: those that share it are the ones the map sends it to, as far as the sizes computed show.

FindStat Mp00080

to permutation

Matched by value: our map agrees with FindStat's image on each of the 278 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.

Sends the set partition to the permutation obtained by considering the blocks as increasing cycles.
ObjectImage
{{1}}[1]
{{1,2}}[2,1]
{{1,2,3}}[2,3,1]
{{1},{2}}[1,2]

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/Mp00080 has the rest.