9 citations · 9 across the 1 of their papers we have counts for
2 papers
math.CO2016
The descent statistic on signed simsun permutations
Shi-Mei Ma, Toufik Mansour, Hai-Na Wang
In this paper we study the generating polynomials obtained by enumerating signed simsun permutations by number of the descents. Properties of the polynomials, including the recurre…
math.CO2015★ 9 cited
Enumeration of a dual set of Stirling permutations by their alternating runs
Shi-Mei Ma, Hai-Na Wang
In this paper, we count a dual set of Stirling permutations by the number of alternating runs. Properties of the generating functions, including recurrence relations, grammatical i…