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Discrete group action and openness of stabilizer

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#representation-theory #topological-groups #galois-representations
60
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What is the topology on $SU(2)$ that makes it homeomorphic to $S^3$?

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#linear-algebra #general-topology #topological-groups #topological-vector-spaces
30
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Orbit of closed set under compact group action

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#general-topology #compactness #group-actions #topological-groups #profinite-groups
135
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Semisimple Lie groups with finite center

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#differential-geometry #lie-groups #lie-algebras #topological-groups #semisimple-lie-algebras
44
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Topology of completion of abelian first-countable topological group

Published on
#abstract-algebra #cauchy-sequences #topological-groups #complete-spaces
74
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Topological groups and compact elements

Published on
#general-topology #group-theory #reference-request #abelian-groups #topological-groups
35
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A nbd of identity $V$ such that $V V^{-1 }$ is contained in another nbd of identity

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#lie-groups #lie-algebras #topological-groups
37
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Question on Borel-measurable maps on topological groups

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#real-analysis #general-topology #topological-groups
54
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Is the group $Lx+b$ amenable where $L$ is Cholesky?

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#topological-groups #cholesky-decomposition #amenability
32
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Solvable radical and closed Lie subgroups

Published on
#lie-groups #lie-algebras #smooth-manifolds #normal-subgroups #topological-groups
40
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Are countable and closed subgroups of a Lie group (or more generally LCH group) necessarily discrete?

Published on
#lie-groups #topological-groups
181
Views

Lifting a map from the quotient by a contractible topological group

Published on
#general-topology #homotopy-theory #topological-groups #cw-complexes
53
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Is $L^\infty(G) \otimes L^\infty(G)$ dense in $L^\infty(G \times G)$?

Published on
#tensor-products #topological-groups #von-neumann-algebras
60
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locally profinite and profinite group

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#group-theory #topological-groups #locally-compact-groups #profinite-groups
39
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$G$ topological group. $G=UD=DU$, $D$ dense, $U$ open set

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#topological-groups

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