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Patricia Hersh
Researcher at North Carolina State University
Publications - 57
Citations - 554
Patricia Hersh is an academic researcher from North Carolina State University. The author has contributed to research in topics: Partially ordered set & Homotopy. The author has an hindex of 14, co-authored 56 publications receiving 513 citations. Previous affiliations of Patricia Hersh include Mathematical Sciences Research Institute & University of Oregon.
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On optimizing discrete Morse functions
TL;DR: Under what conditions may several gradient paths in a discrete Morse function simultaneously be reversed to cancel several pairs of critical cells, to further collapse the complex, and which gradient paths are individually reversible in lexicographic discrete Morse functions on poset order complexes be addressed.
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Discrete Morse functions from lexicographic orders
TL;DR: In this article, a discrete Morse function with a relatively small number of critical cells for the order complex of any finite poset with O and I from any lexicographic order on its maximal chains was constructed.
Posted Content
Maximum Likelihood Estimation in Latent Class Models For Contingency Table Data
TL;DR: In this article, the basic latent class model proposed originally by the sociologist Paul F. Lazarfeld for categorical variables is studied and its geometric structure is explained. And the authors draw parallels between the statistical and geometric properties of latent class models and illustrate geometrically the causes of many problems associated with maximum likelihood estimation and related statistical inference.
Posted Content
Representation stability for cohomology of configuration spaces in $\mathbf{R}^d$
Patricia Hersh,Victor Reiner +1 more
TL;DR: In this article, the authors studied the stability of the symmetric group on the configuration space of ordered points in a dimension divisible by d-1, and showed that it stabilizes at least at the level of 3i/3i+1, where 3i is the maximum rank selected.
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Coloring complexes and arrangements
Patricia Hersh,Ed Swartz +1 more
TL;DR: In this paper, Steingrimsson's coloring complex and Jonsson's unipolar complex are interpreted in terms of hyperplane arrangements, which leads to short proofs that all coloring complexes and a large class of unipolar complexes have convex ear decompositions.