Covering groups of nonconnected topological groups and 2-groups
Covering groups of nonconnected topological groups and 2-groups
复制标题
非连通拓扑群和2-群的覆盖群
DOI:
10.1080/00927872.2019.1612425
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发表时间:
2019
影响因子:
0.7
通讯作者:
Rumynin D
中科院分区:
文献类型:
--
作者:
Rumynin D
We investigate the universal cover of a topological group that is not necessarily connected. Its existence as a topological group is governed by a Taylor cocycle, an obstruction in 3-cohomology. Alternatively, it always exists as a topological 2-group. The splitness of this 2-group is also governed by an obstruction in 3-cohomology, a Sinh cocycle. We give explicit formulas for both obstructions and show that they are inverse of each other.
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影响因子:
0.6
作者:
Rumynin D
通讯作者:
Rumynin D
DOI:
10.1007/978-1-4615-7831-4_16
发表时间:
2005
影响因子:
1.2
作者:
S. Maclane;J. H. C. Whitehead
通讯作者:
J. H. C. Whitehead
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
J. Huebschmann
通讯作者:
J. Huebschmann
影响因子:
0.8
作者:
Ronald Brown;Osman Mucuk
通讯作者:
Osman Mucuk
DOI:
--
发表时间:
1953
期刊:
影响因子:
--
作者:
R. L. Taylor
通讯作者:
R. L. Taylor