科研之友
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摘要
We give a means of estimating the equivariant compression of a group G in terms of properties of open subgroups G(i) subset of G whose direct limit is G. Quantifying a result by Gal, we also study the behaviour of the equivariant compression under amalgamated free products G(1) *(H) G(2) where H is of finite index in both G(1) and G(2).
- 出版日期2016-9
