Kevin J. Ma

collaborators

2 papers

math.CO2010

Minimal Permutations and 2-Regular Skew Tableaux

William Y. C. Chen, Cindy C. Y. Gu, Kevin J. Ma

Bouvel and Pergola introduced the notion of minimal permutations in the study of the whole genome duplication-random loss model for genome rearrangements. Let $F_{d} (n)$ de…

math.CO2009

Higher Order Log-Concavity in Euler's Difference Table

William Y. C. Chen, Cindy C. Y. Gu, Kevin J. Ma +1

Let $e_{n}^{k}$ be the entries in the classical Euler's difference table. We consider the array $d_{n}^{k} = e_{n}^{k} / k!$ for $0 \leq k \leq n$ , where $d_{n}^{k}$ can be interpreted as the num…