The upper bound inequality h i (P)&h i&1 (P) ( n&d+i&2 i ) (0 i dΓ2) is proved for the toric h-vector of a rational convex d-dimensional polytope with n vertices. This gives nonlinear inequalities on flag vectors of rational polytopes. ## 1998 Academic Press A major result in polytope theory is th
An upper bound for the diameter of a polytope
β Scribed by David Barnette
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 515 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
The distance between two vertices of a polytope is the minimum number of edges in a path joining them. The diameter of a polytope is the greatest distance between two vertices of the polytope. We show that if P is a d-dimensional polytope with n facets, then the diameter of P is at most $ $-3(,r -d + 3).
π SIMILAR VOLUMES
We prove two new upper bounds on the number of facets that a d-dimensional 0/1-polytope can have. The first one is 2(d -1)!+2(d -1) (which is the best one currently known for small dimensions), while the second one of O((d -2)!) is the best known bound for large dimensions.
## Abstract The path number of a graph __G__, denoted __p(G)__, is the minimum number of edgeβdisjoint paths covering the edges of __G.__ LovΓ‘sz has proved that if __G__ has __u__ odd vertices and __g__ even vertices, then __p(G)__ β€ 1/2 __u__ + __g__ β 1 β€ __n__ β 1, where __n__ is the total numbe
An upper bound for the harmonious chromatic number of a graph G is given. Three corollaries of the theorem are theorems or improvements of the theorems of Miller and Pritikin. The assignment of colors to the vertices of a graph such that each vertex has exactly one color has been studied for well o