Assume that G is a virtually torsion-free solvable group of finite rank and A is a ℤG-module whose underlying abelian group is torsion-free and has finite rank. We stipulate a condition on A that ensures that Hn(G,A) and Hn(G,A) are finite for all n ≥ 0. Using this property for cohomology in dimension two, we deduce two results concerning the presence of near supplements and complements in solvable groups of finite rank. As an application of our near-supplement theorem, we obtain a new result regarding the homological dimension of solvable groups.
All Science Journal Classification (ASJC) codes
- Applied Mathematics