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We analyze marked poset polytopes and generalize a result due to Hibi and Li, answering whether the marked chain polytope is unimodular equivalent to the marked order polytope. Both polytopes appear naturally in the representation theory of…

Combinatorics · Mathematics 2015-07-06 Ghislain Fourier

We obtain variants of the classical Minkowski Theorem on inhomogeneous approximation where we require moreover that the solutions $p, q$ be coprime integers. We link the subject with density exponents of lattice orbits in the real plane.

Number Theory · Mathematics 2011-10-26 Michel Laurent , Arnaldo Nogueira

Consider a convex polygon P in the plane, and denote by U a homothetical copy of the vector sum of P and (-P). Then the polygon U, as unit ball, induces a norm such that, with respect to this norm, P has constant Minkowskian width. We…

Differential Geometry · Mathematics 2015-07-03 Marcos Craizer , Horst Martini

Let $V$ be a real vector space of dimension $n$ and let $M\subset V$ be a lattice. Let $P\subset V$ be an $n$-dimensional polytope with vertices in $M$, and let $\varphi\colon V\rightarrow \CC $ be a homogeneous polynomial function of…

Number Theory · Mathematics 2021-12-21 Matthias Beck , Paul E. Gunnells , Evgeny Materov

We show that lattice polytopes cut out by root systems of classical type are normal and Koszul, generalizing a well-known result of Bruns, Gubeladze, and Trung in type A. We prove similar results for Cayley sums of collections of polytopes…

Combinatorics · Mathematics 2008-12-07 Sam Payne

We obtain asymptotic formulae with optimal error terms for the number of lattice points under and near a dilation of the standard parabola, the former improving upon an old result of Popov. These results can be regarded as achieving the…

Number Theory · Mathematics 2020-01-07 Jing-Jing Huang , Huixi Li

For a locally compact second countable group G and a lattice subgroup Gamma, we give an explicit quantitative solution of the lattice point counting problem in general domains in G, provided that i) G has finite upper local dimension, and…

Dynamical Systems · Mathematics 2009-03-10 Alexander Gorodnik , Amos Nevo

We prove a sharp bound for the remainder term of the number of lattice points inside a ball, when averaging over a compact set of (not necessarily unimodular) lattices, in dimensions two and three. We also prove that such a bound cannot…

Number Theory · Mathematics 2013-11-13 Samuel Holmin

We describe an algorithm for determining whether two convex polytopes P and Q, embedded in a lattice, are isomorphic with respect to a lattice automorphism. We extend this to a method for determining if P and Q are equivalent, i.e. whether…

Combinatorics · Mathematics 2013-01-29 Roland Grinis , Alexander Kasprzyk

Minkowski sums cover a wide range of applications in many different fields like algebra, morphing, robotics, mechanical CAD/CAM systems ... This paper deals with sums of polytopes in a n dimensional space provided that both H-representation…

Computational Geometry · Computer Science 2014-12-09 Vincent Delos , Denis Teissandier

We present a short elementary proof of the following Twelve Points Theorem: Let M be a convex polygon with vertices at the lattice points, containing a single lattice point in its interior. Denote by m (resp. m*) the number of lattice…

Metric Geometry · Mathematics 2008-08-11 Matija Cencelj , Dušan Repovš , Mikhail Skopenkov

We give an explicit upper bound on the volume of lattice simplices with fixed positive number of interior lattice points. The bound differs from the conjectural sharp upper bound only by a linear factor in the dimension. This improves…

Combinatorics · Mathematics 2017-10-25 Gennadiy Averkov , Jan Krümpelmann , Benjamin Nill

We give explicit, polynomial-time computable formulas for the number of integer points in any two-dimensional rational polygon. A rational polygon is one whose vertices have rational coordinates. We find that the basic building blocks of…

Combinatorics · Mathematics 2007-05-23 Matthias Beck , Sinai Robins

We prove a sharp upper bound on the number of boundary lattice points of a rational polygon in terms of its denominator and the number of interior lattice points, generalizing Scott's inequality. We then give sharp lower and upper bounds on…

Combinatorics · Mathematics 2024-11-19 Martin Bohnert , Justus Springer

First we develop a technique to construct Banach lattices of homogeneous polynomials. We obtain, in particular, conditions for the linear spans of all positive compact and weakly compact $n$-homogeneous polynomials between the Banach…

Functional Analysis · Mathematics 2024-06-06 Geraldo Botelho , Vinícius C. C. Miranda , Pilar Rueda

This paper is an investigation of a procedure for constructing lattices by means of taking the sum of a pair of isometric lattices. We present various general results pertaining to this construction and discuss several examples of it…

Group Theory · Mathematics 2010-09-02 Paul Lewis

This note provides a Lefschetz theorem for Minkowski sums of polytopes, and conclude lower bound theorems for Minkowski sums of polytopes. It is written as an appendix to arXiv:1405.7368, so notation and references follow that paper.

Combinatorics · Mathematics 2021-01-21 Karim Adiprasito

Many homogeneous polynomials that arise in the study of sums of squares and Hilbert's 17th problem come from monomial substitutions into the arithmetic-geometric inequality. In 1989, the second author gave a necessary and sufficient…

Combinatorics · Mathematics 2019-09-25 Victoria Powers , Bruce Reznick

We give a shorter and simpler proof of the result of [2], which gives a necessary and sufficient condition for when a lattice diagram is the projection of a lattice link.

Geometric Topology · Mathematics 2018-04-16 Ramin Naimi , Andrei Pavelescu , Elena Pavelescu

Alcoved polytopes are characterized by the property that all facet normal directions are parallel to the roots $e_i-e_j$. Unlike other prominent families of polytopes, like generalized permutahedra, alcoved polytopes are not closed under…

Combinatorics · Mathematics 2025-11-05 Nick Early , Lukas Kühne , Leonid Monin