English

Rational polytopes with Ehrhart coefficients of arbitrary period

Combinatorics 2020-02-11 v1

Abstract

A seminal result of E. Ehrhart states that the number of integer lattice points in the dilation of a rational polytope by a positive integer kk is a quasi-polynomial function of kk --- that is, a "polynomial" in which the coefficients are themselves periodic functions of kk. Using a result of F. Liu on the Ehrhart polynomials of cyclic polytopes, we construct not-necessarily-convex rational polytopes of arbitrary dimension in which the periods of the coefficient functions appearing in the Ehrhart quasi-polynomial take on arbitrary values.

Keywords

Cite

@article{arxiv.2002.03257,
  title  = {Rational polytopes with Ehrhart coefficients of arbitrary period},
  author = {Tyrrell B. McAllister},
  journal= {arXiv preprint arXiv:2002.03257},
  year   = {2020}
}

Comments

8 pages

R2 v1 2026-06-23T13:35:26.867Z