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PrimeDyckPath from DyckPath ​

The path wrapped in one more up step first and down step last: a path that touches the diagonal only at its ends.

DyckPath → DyckPath

FindStat's Mp00199. Injective, one semilength up; the paths it reaches are those with a single return.

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

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Explore

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

Properties

Transport a statistic

Pick a statistic on DyckPath. Its distribution over the images of DyckPath at each size is computed, and compared with the 171 statistics on DyckPath: those that share it are the ones the map sends it to, as far as the sizes computed show.

FindStat Mp00199

prime Dyck path

Matched by value: our map agrees with FindStat's image on each of the 196 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.

Return the Dyck path obtained by adding an initial up and a final down step.
ObjectImage
[1,0][1,1,0,0]
[1,0,1,0][1,1,0,1,0,0]
[1,1,0,0][1,1,1,0,0,0]
[1,0,1,0,1,0][1,1,0,1,0,1,0,0]

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/Mp00199 has the rest.