6 citations · 10 across the 4 of their papers we have counts for
6 papers
New examples of period collapse
Dan Cristofaro-Gardiner, Teresa Xueshan Li, Richard Stanley
"Period collapse" refers to any situation where the period of the Ehrhart function of a polytope is less than the denominator of that polytope. We study several interesting situati…
The monomial basis and the -basis of the Hopf algebra of parking functions
Teresa Xueshan Li
Consider the vector space spanned by parking functions. By representing parking functions as labeled digraphs, Hivert, Novelli and Thibon constructed a coco…
Order-Chain Polytopes
Takayuki Hibi, Nan Li, Teresa Xueshan Li +2
Given two families and of integral polytopes with nice combinatorial and algebraic properties, a natural way to generate new class of polytopes is to take the intersection…
Eulerian pairs on Fibonacci words
Teresa X. S. Li, Charles B. Mei, Melissa Y. F. Miao
Recently, Sagan and Savage introduced the notion of Eulerian pairs. In this note, we find Eulerian pairs on Fibonacci words based on Foata's first transformation or Han's bijection…
A Bijection between Atomic Partitions and Unsplitable Partitions
William Y. C. Chen, Teresa X. S. Li, David G. L. Wang
In the study of the algebra of symmetric functions in noncommutative variables, Bergeron and Zabrocki found a free generating set consisting of power sum symmetric…
Han's Bijection via Permutation Codes
William Y. C. Chen, Neil J. Y. Fan, Teresa X. S. Li
We show that Han's bijection when restricted to permutations can be carried out in terms of the cyclic major code and the cyclic inversion code. In other words, it maps a permutati…