5 citations · 15 across the 9 of their papers we have counts for
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math.GR2019★ 5 cited
When is the Sum of Two Closed Subgroups Closed in a Locally Compact Abelian Group
Wolfgang Herfort, Karl H. Hofmann, Francesco G. Russo
Locally compact abelian groups are classified in which the sum of any two closed subgroups is itself closed. This amounts to reproving and extending results by Yu.~N.~Mukhin from 1…
math.AT2019
Geometry of compact lifting spaces
Gregory R. Conner, Wolfgang Herfort, Petar Pavešić
We study a natural generalization of inverse systems of finite regular covering spaces. A limit of such a system is a fibration whose fibres are profinite topological groups. Howev…