WIDTHS OF SUBGROUPS
WIDTHS OF SUBGROUPS
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DOI:
10.1090/s0002-9947-98-01792-9
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发表时间:
1998
影响因子:
1.3
通讯作者:
Rita Gitik;M. Mitra;E. Rips;M. Sageev
中科院分区:
文献类型:
--
作者:
Rita Gitik;M. Mitra;E. Rips;M. Sageev
We say that the width of an infinite subgroup H in G is n if there exists a collection of n essentially distinct conjugates of H such that the intersection of any two elements of the collection is infinite and n is maximal possible. We define the width of a finite subgroup to be 0. We prove that a quasiconvex subgroup of a negatively curved group has finite width. It follows that geometrically finite surfaces in closed hyperbolic 3-manifolds satisfy the k-plane property for some k.