| Autor(es): |
Andrade, M. G. C.
;
Fanti, E. L. C.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ALGEBRA & DISCRETE MATHEMATICS; v. 9, n. 2, p. 10-pg., 2010-01-01. |
| Resumo | |
Let G be a group, let S a subgroup with infinite index in G and let F(s)G be a certain Z(2)G-module. In this paper, using the cohomological invariant E(G, S, F(s)G) or simply E(G, S) (defined in [2]), we analyze some results about splittings of group C over a commensurable with S subgroup which are related with the algebraic obstruction "sing(G)(S)" defined by Kropholler and Roller ([8]. We conclude that E(G,S) can substitute the obstruction "sing(G)(S)" in more general way. We also analyze splittings of groups in the case, when G and S satisfy certain duality conditions. (AU) | |
| Processo FAPESP: | 03/10220-6 - Teoria da Gravitação: pertubações de sistemas gravitacionais |
| Beneficiário: | Cecilia Bertoni Martha Hadler Chirenti |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |