9 citations · 49 across the 59 of their papers we have counts for
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math.CO2013★ 2 cited
Normal ordering problem and the extensions of the Stirling grammar
Shi-Mei Ma, Toufik Mansour, Matthias Schork
The purpose of this paper is to investigate the connection between context-free grammars and normal ordering problem, and then to explore various extensions of the Stirling grammar…
math.CO2013
On -vectors and the derivatives of the tangent and secant functions
Shi-Mei Ma
In this paper we consider the gamma-vectors of the types A and B Coxeter complexes as well as the gamma-vectors of the types A and B associahedrons. We show that these gamma-vector…