2020
DOI: 10.48550/arxiv.2010.13041
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On the Bieri-Neumann-Strebel-Renz invariants of the weak commutativity construction $\X(G)$

Dessislava H. Kochloukova

Abstract: For a finitely generated group G we calculate the Bieri-Neumann-) that are equalities when W (G) is finitely generated and we explicitly calculate Σ 2 (X(G)/W (G), Z) and Σ 2 (X(G)/W (G)) in terms of the Σ-invariants of G. We calculate completely the Σ-invariants in dimensions 1 and 2 of the group ν(G) and show that if G is finitely generated group with finitely presented commutator subgroup then the non-abelian tensor square G ⊗ G is finitely presented.

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