Auflistung nach Autor "Lorensen, Karl"
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Group-Graded Rings Satisfying the Strong Rank Condition
[OWP-2019-22] Kropholler, Peter H.; Lorensen, Karl (Mathematisches Forschungsinstitut Oberwolfach, 2019-08-16)A ring R satisfies the strong rank condition (SRC) if, for every natural number n, the free R-submodules of Rn all have rank ≤n. Let G be a group and R a ring strongly graded by G such that ... -
Torsion-free Covers of Solvable Minimax Groups
[OWP-2015-15] Kropholler, Peter H.; Lorensen, Karl (Mathematisches Forschungsinstitut Oberwolfach, 2015-11-18)We prove that every finitely generated solvable minimax group can be realized as a quotient of a torsion-free solvable minimax group. This result has an application to the investigation of random walks on finitely generated ...