## Abstract In this paper we introduce some general necessary conditions for the existence of graph homomorphisms, which hold in both directed and undirected cases. Our method is a combination of Diaconis and SaloffβCoste comparison technique for Markov chains and a generalization of Haemers interl
A Random Walk through the Web
β Scribed by Sabine Klapp
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 50 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0044-8249
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