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The Bianchi groups are subgroup separable on geometrically finite subgroups
Published Web Location
https://arxiv.org/pdf/math/9811114.pdfNo data is associated with this publication.
Abstract
We show that for certain arithmetic groups, geometrically finite subgroups are the intersection of finite index subgroups containing them. Examples are the Bianchi groups and the Seifert-Weber dodecahedral space. In particular, for manifolds commensurable with these groups, immersed incompressible surfaces lift to embeddings in a finite sheeted covering.