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| Author(s): |
Flavia Souza Machado da Silva
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Matemática, Estatística e Computação Científica |
| Defense date: | 2006-05-16 |
| Examining board members: |
Dessislava Hristova Kochloukova;
Daciberg Lima Gonçalves;
Erminia de Lourdes Campello Fanti;
Antonio José Engler;
Paulo Roberto Brumatti
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| Advisor: | Dessislava Hristova Kochloukova |
| Abstract | |
We study embedding homological properties of finitely generated metabelian groups and we extend an earlier work in [19] where it was shown that for a fixed m every finitely generated metabelian group G embeds in a quotient of a metabelian group of homological type FPm and furthermore that G embeds in a metabelian group of type FP4. More precisely we show that for a fixed m every finitely generated metabelian group G embeds in a metabelian group of type FPm. This is proved using ideas of commutative algebra, such as Noether normalization theorem and properties of embedding of finitely generated modules over commutative rings via localization. In the case of metabelian groups this gives embedding into a metabelian HNN extensions. An important step in the proof is the use of the Áberg method to guarantee that the FPm-conjecture in a very particular case is true. The FPm-conjecture for metabelian groups suggests when a metabelian group has a homological type FPm, but it is still open. It is interesting to note that the Áberg method mixes ideas from commutative algebra and algebraic topology (action of group on a subcomplex af a finite product of trees) (AU) | |