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LastSimpleOfMaximalProjectiveDimension on DyckPath ​

The last vertex, counting from 0, whose simple module has projective dimension equal to the global dimension.

On DyckPath

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

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FindStat St001265

The maximal i such that the i-th simple module has projective dimension equal to the global dimension in the corresponding Nakayama algebra.

ObjectValue
[1,0]0
[1,0,1,0]0
[1,1,0,0]1
[1,0,1,0,1,0]0
[1,0,1,1,0,0]1
[1,1,0,0,1,0]0
[1,1,0,1,0,0]0
[1,1,1,0,0,0]2

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St001265 has the rest.