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SIAMDM
2010
101views more  SIAMDM 2010»
13 years 10 months ago
Combinatorics and Genus of Tropical Intersections and Ehrhart Theory
Let g1, . . . , gk be tropical polynomials in n variables with Newton polytopes P1, . . . , Pk. We study combinatorial questions on the intersection of the tropical hypersurfaces d...
Reinhard Steffens, Thorsten Theobald
DCG
1999
74views more  DCG 1999»
14 years 3 days ago
Piles of Cubes, Monotone Path Polytopes, and Hyperplane Arrangements
Monotone path polytopes arise as a special case of the construction of fiber polytopes, introduced by Billera and Sturmfels. A simple example is provided by the permutahedron, whic...
Christos A. Athanasiadis
JCT
2002
83views more  JCT 2002»
14 years 3 days ago
Multidimensional Ehrhart Reciprocity
In [1], the author generalized Ehrhart's idea ([2]) of counting lattice points in dilated rational polytopes: Given a rational polytope, that is, a polytope with rational vert...
Matthias Beck
EJC
2000
14 years 8 days ago
Simple 0/1-Polytopes
For general polytopes, it has turned out that with respect to many questions it su ces to consider only the simple polytopes, i.e., d-dimensional polytopes where every vertex is c...
Volker Kaibel, Martin Wolff
EJC
2000
14 years 8 days ago
Cyclic Polytopes and Oriented Matroids
Consider the moment curve in the real Euclidean space Rd defined parametrically by the map : R Rd , t (t) = (t, t2 , . . . , td ). The cyclic d-polytope Cd(t1, . . . , tn) is t...
Raul Cordovil, Pierre Duchet
COMBINATORICS
2004
110views more  COMBINATORICS 2004»
14 years 9 days ago
Flag Vectors of Multiplicial Polytopes
Bisztriczky introduced the multiplex as a generalization of the simplex. A polytope is multiplicial if all its faces are multiplexes. In this paper it is proved that the flag vect...
Margaret M. Bayer
DCG
2007
125views more  DCG 2007»
14 years 12 days ago
Alcoved Polytopes, I
The aim of this paper is to initiate the study of alcoved polytopes, which are polytopes arising from affine Coxeter arrangements. This class of convex polytopes includes many clas...
Thomas Lam, Alexander Postnikov
DCG
2007
94views more  DCG 2007»
14 years 12 days ago
Banach-Mazur Distances and Projections on Random Subgaussian Polytopes
We consider polytopes in Rn that are generated by N vectors in Rn whose coordinates are independent subgaussian random variables. (A particular case of such polytopes are symmetri...
Rafal Latala, Piotr Mankiewicz, Krzysztof Oleszkie...
COMBINATORICS
2007
92views more  COMBINATORICS 2007»
14 years 13 days ago
Compact Hyperbolic Coxeter n-Polytopes with n+3 Facets
We use methods of combinatorics of polytopes together with geometrical and computational ones to obtain the complete list of compact hyperbolic Coxeter npolytopes with n + 3 facet...
Pavel Tumarkin
DCG
2006
163views more  DCG 2006»
14 years 14 days ago
Isometry-Invariant Valuations on Hyperbolic Space
Abstract. Hyperbolic area is characterized as the unique continuous isometry invariant simple valuation on convex polygons in H2 . We then show that continuous isometry invariant s...
Daniel A. Klain