Injectivity theorems and algebraic closures of groups with coefficients

Jae Choon Cha

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Injectivity theorems and algebraic closures of groups with coefficients

Jae Choon Cha

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Abstract

Recently, Cochran and Harvey defined torsion-free derived series of groups and proved an injectivity theorem on the associated torsion-free quotients. We show that there is a universal construction which extends such an injectivity theorem to an isomorphism theorem. Our result relates injectivity theorems to a certain homology localization of groups. In order to give a concrete combinatorial description and existence proof of the necessary homology localization, we introduce a new version of algebraic closures of groups with coefficients by considering a certain type of equations.

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BibTeX RIS

Jae Choon Cha. 2007-05-11. Injectivity theorems and algebraic closures of groups with coefficients. https://arxiv.org/abs/math/0609409

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