The cohomology ring of an HNN extension of combinatorially aspherical groups
β Scribed by K.J. Horadam
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 948 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0022-4049
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π SIMILAR VOLUMES
We first prove the double coset separability of certain HNN extensions with cyclic associated subgroups. Using this we prove a criterion for the conjugacy separability of HNN extensions of conjugacy separable groups with cyclic associated subgroups. Applying this result we show that certain HNN exte
Let F denote a field of characteristic different from two. In this paper we describe the mod 2 cohomology of a Galois group G F (called the W-group of F) which is known to essentially characterize the Witt ring WF of anisotropic quadratic modules over F. We show that H\*(G F , F 2 ) contains the mod