9 citations · 49 across the 59 of their papers we have counts for
4 papers · 1 filter
The cycle descent statistic on permutations
Jun Ma, Shimei Ma, Yeong-Nan Yeh +1
In this paper we study the cycle descent statistic on permutations. Several involutions on permutations and derangements are constructed. Moreover, we construct a bijection between…
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…
Stirling permutations, cycle structures of permutations and perfect matchings
Shi-Mei Ma, Yeong-Nan Yeh
In this paper we provide a unified combinatorial approach to establish a connection between Stirling permutations, cycle structures of permutations and perfect matchings. The main…
Derivative polynomials and enumeration of permutations by their alternating descents
Shi-Mei Ma, Yeong-Nan Yeh
In this paper we present an explicit formula for the number of permutations with a given number of alternating descents. Moreover, we study the interlacing property of the real par…