William Y. C. Chen

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20012013

most citedContext-free Grammars and Multivariate Stable Polynomials over Stirling Permutations

19 citations · 92 across the 66 of their papers we have counts for

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Showing 2013Show all

2 papers · 1 filter

math.CO2013

Ordered Partitions Avoiding a Permutation of Length 3

William Y. C. Chen, Alvin Y. L. Dai, Robin D. P. Zhou

An ordered partition of $[n] = {1, 2, \dots, n}$ is a partition whose blocks are endowed with a linear order. Let $O P_{n, k}$ be set of ordered partitions of $[n]$ with $…

math.CO2013

Combinatorial Proof of the Inversion Formula on the Kazhdan-Lusztig R-Polynomials

William Y. C. Chen, Neil J. Y. Fan, Alan J. X. Guo +3

Let $W$ be a Coxeter group, and for $u, v \in W$ , let $R_{u, v} (q)$ be the Kazhdan-Lusztig $R$ -polynomial indexed by $u$ and $v$ . In this paper, we present a combinatorial proof of th…