48 citations · 169 across the 41 of their papers we have counts for
45 papers
The toric g-vector of nestohedra
Richard Ehrenborg, Gábor Hetyei, Margaret Readdy
We show the entries of the toric g-vector of any dual simplicial polytope is a nonnegative integer linear combination of its gamma-vector entries. We give combinatorial interpretat…
On the structure of the d-indivisible noncrossing partition posets
Richard Ehrenborg, Gábor Hetyei
We study the poset of d-indivisible noncrossing partitions introduced by Mühle, Nadeau and Williams. These are noncrossing partitions such that each block and each dual block has c…
Optimization Perspectives on Shellsort
Oscar Skean, Richard Ehrenborg, Jerzy W. Jaromczyk
Shellsort is a sorting method that is attractive due to its simplicity, yet it takes effort to analyze its efficiency. The heart of the algorithm is the gap sequence chosen a prior…
Pizza and 2-structures
Richard Ehrenborg, Sophie Morel, Margaret Readdy
Let be a Coxeter hyperplane arrangement in -dimensional Euclidean space. Assume that the negative of the identity map belongs to the associated Coxeter group .…
Sharing pizza in n dimensions
Richard Ehrenborg, Sophie Morel, Margaret Readdy
We introduce and prove the -dimensional Pizza Theorem: Let be a hyperplane arrangement in . If is a measurable set of finite volume, the {pizza…
A generalization of combinatorial identities for stable discrete series constants
Richard Ehrenborg, Sophie Morel, Margaret Readdy
This article is concerned with the constants that appear in Harish-Chandra's character formula for stable discrete series of real reductive groups, although it does not require any…