Lower bounds for the Betti numbers for homology groups of racks and quandles will be given using the quotient homomorphism to the orbit quandles. Exact sequences relating various types of homology groups are analyzed. Geometric methods of proving non-triviality of cohomology groups are also given, u
✦ LIBER ✦
Amenable groups, topological entropy and Betti numbers
✍ Scribed by Gábor Elek
- Publisher
- The Hebrew University Magnes Press
- Year
- 2002
- Tongue
- English
- Weight
- 847 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0021-2172
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