k-trees are I special class of perfect elimination grap% which arise in the study of sparse linear systems. We present four simple ch,&r.xterizations of k-trees involving cliques, paths, and separators.
Some simple characterizations of contractivity regions
β Scribed by Paula De Oliveira
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 332 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0377-0427
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The main result in this paper is to establish some new characterizations of convex functions, in which we also simplify the proof of the characterizations given by Bessenyei and PΓ‘les.
The purpose of this paper is to give new characterizations of some mean-values of two positive real numbers. The arithmetic, geometric, and harmonic means of two positive real numbers are the fundamentals of this paper.
## Abstract Let __P__ be a Markov kernel defined on a measurable space (__X__, π). A __P__βergodic probability is an extreme point of the family of all __P__βinvariant probability measures on π. Several characterizations of __P__βergodic probabilities are given. In particular, for the special case