Additive conjugacy and the Bohr compactification of orthogonal representations
Additive conjugacy and the Bohr compactification of orthogonal representations
复制标题
加法共轭和正交表示的玻尔紧化
DOI:
10.1007/s00208-021-02191-w
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发表时间:
2021
影响因子:
1.4
通讯作者:
Tamuz, O
中科院分区:
文献类型:
--
作者:
Chase, Z.;Hann-Caruthers, W.;Tamuz, O
We say that two unitary or orthogonal representations of a finitely generated groupGareadditive conjugatesif they are intertwined by an additive map, which need not be continuous. We associate to each representation ofGa topological action that is a complete additive conjugacy invariant: the action ofGby group automorphisms on the Bohr compactification of the underlying Hilbert space. Using this construction we show that the property of having almost invariant vectors is an additive conjugacy invariant. As an application we show thatGis amenable if and only if there is a nonzero homomorphism fromintothat is invariant to theG-action.
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DOI:
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发表时间:
1996
期刊:
影响因子:
--
作者:
K. Schmidt
通讯作者:
K. Schmidt
DOI:
--
发表时间:
1963
期刊:
影响因子:
--
作者:
E. Hewitt;K. Ross
通讯作者:
K. Ross
DOI:
--
发表时间:
2023
期刊:
影响因子:
--
作者:
Yuichi Kabaya;蒲谷祐一
通讯作者:
蒲谷祐一
DOI:
10.1007/s000390050030
发表时间:
1997
期刊:
Geometric & Functional Analysis GAFA
影响因子:
--
作者:
E. Glasner;B. Weiss
通讯作者:
B. Weiss