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Journal für die reine und angewandte Mathematik

Managing Editor: Weissauer, Rainer

Ed. by Colding, Tobias / Huybrechts, Daniel / Hwang, Jun-Muk / Williamson, Geordie


IMPACT FACTOR 2018: 1.859

CiteScore 2018: 1.14

SCImago Journal Rank (SJR) 2018: 2.554
Source Normalized Impact per Paper (SNIP) 2018: 1.411

Mathematical Citation Quotient (MCQ) 2018: 1.55

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1435-5345
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Volume 2005, Issue 583

Issues

Ehrhart polynomials, simplicial polytopes, magic squares and a conjecture of Stanley

Christos A. Athanasiadis
Published Online: 2005-11-07 | DOI: https://doi.org/10.1515/crll.2005.2005.583.163

Abstract

It is proved that for a certain class of integer polytopes P  the polynomial h(t ) which appears as the numerator in the Ehrhart series of P, when written as a rational function of t, is equal to the h-polynomial of a simplicial polytope and hence that its co-efficients satisfy the conditions of the g-theorem. This class includes the order polytopes of graded posets, previously studied by Reiner and Welker, and the Birkhoff polytope of doubly stochastic n × n matrices. In the latter case the unimodality of the coefficients of (t ), which follows, was conjectured by Stanley in 1983.

About the article

Received: 8. März 2004

Published Online: 2005-11-07

Published in Print: 2005-06-27


Citation Information: Journal für die reine und angewandte Mathematik, Volume 2005, Issue 583, Pages 163–174, ISSN (Online) 1435-5345, ISSN (Print) 0075-4102, DOI: https://doi.org/10.1515/crll.2005.2005.583.163.

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