9 citations · 49 across the 59 of their papers we have counts for
7 papers · 1 filter
Stirling permutations, marked permutations and Stirling derangements
Guan-Huei Duh, Yen-chi Roger Lin, Shi-Mei Ma +1
In this paper we introduce the definition of marked permutations. We first present a bijection between Stirling permutations and marked permutations. We then present an involution…
Context-free grammars for several polynomials associated with Eulerian polynomials
Shi-Mei Ma, Jun Ma, Yeong-Nan Yeh +1
In this paper, we present grammatical descriptions of several polynomials associated with Eulerian polynomials, including q-Eulerian polynomials, alternating run polynomials and de…
Restricted Stirling permutations
David Callan, Shi-Mei Ma, Toufik Mansour
In this paper, we study the generating functions for the number of pattern restricted Stirling permutations with a given number of plateaus, descents and ascents. Properties of the…
Eulerian polynomials, perfect matchings and Stirling permutations of the second kind
Shi-Mei Ma, Yeong-Nan Yeh
In this paper, we first present combinatorial proofs of a kind of expansions of the Eulerian polynomials of types A and B, and then we introduce Stirling permutations of the second…
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…
Simsun permutations, simsun successions and simsun patterns
Shi-Mei Ma, Yeong-Nan Yeh
In this paper, we introduce the definitions of simsun succession, simsun cycle succession and simsun pattern. In particular, the ordinary simsun permutations are permutations avoid…
The peak statistics on simsun permutations
Shi-Mei Ma, Yeong-Nan Yeh
In this paper, we study the relationship among left peaks, interior peaks and up-down runs of simsun permutations. Properties of the generating polynomials, including the recurrenc…