Rank gradient in co-final towers of certain Kleinian groups
This dissertation provides the first known examples of finite co-volume Kleinian groups which have co- final towers of finite index subgroups with positive rank gradient. We prove that if the fundamental group of an orientable finite volume hyperbolic 3-manifold has fi nite index in the reflectio...
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| Format: | Others |
| Language: | English |
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2012
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| Online Access: | http://hdl.handle.net/2152/ETD-UT-2011-12-4673 |