A group G is LERF locally extended residually finite if for any finitely generated subgroup S of G and for any g f S there exists a finite index subgroup S of G which contains S but not g. Using graph-theoretical methods we give 0 algorithms for constructing finite index subgroups in amalgamated fre
Separability properties of free groups and surface groups
โ Scribed by G.A. Niblo
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 580 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0022-4049
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๐ SIMILAR VOLUMES
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We introduce the concept of finite compatibility to prove certain double coset separability of tree products of central subgroup separable groups. We also prove a criterion for the conjugacy separability of generalized free products of two conjugacy separable groups amalgamating a central subgroup i