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15
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$p^n \Bbb{Z}_p$ is closed subgroup of $ \Bbb{Z}_p$

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#algebraic-number-theory #topological-groups #p-adic-number-theory
117
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Krull topology is discrete if only if the exntension is finite

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#galois-theory #topological-groups #profinite-groups
196
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Relation between fundamental system of neighborhood and basis of topological space

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#general-topology #geometry #topological-groups
29
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Does $(x,y)\mapsto \phi_x(y)$ vanish outside some compact set in $G\times H$?

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#real-analysis #general-topology #harmonic-analysis #topological-groups #locally-compact-groups
187
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Convolution on a locally compact group is associative

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#measure-theory #convolution #harmonic-analysis #topological-groups #haar-measure
47
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Is there a compact metrizable non-abelian torsion-free group?

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#topological-groups
52
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Groups with "same" finite-index normal subgroups

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#group-theory #normal-subgroups #topological-groups #profinite-groups
55
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Topology by a collection of cosets which makes product continuous

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#general-topology #group-theory #topological-groups
403
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What are the epimorphisms in the category of topological groups?

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#category-theory #topological-groups #epimorphisms
165
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Is any finite index subgroup of multiplicative group of p-adic field open?

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#number-theory #algebraic-number-theory #topological-groups #p-adic-number-theory
28
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Injectivity of divisible locally compact abelian groups

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#abstract-algebra #topological-groups #abelian-categories #locally-compact-groups
50
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Is Homeo(M) locally path-connected for a general topological manifold?

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#manifolds #topological-groups #geometric-topology #4-manifolds
41
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Changing variable in topological groups

Published on
#integration #topological-groups
54
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When is the trivial subgroup, $1$, isolated in the set of all closed subgroups of $G$?

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#general-topology #group-theory #lie-groups #lie-algebras #topological-groups
185
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What are the closed subgroups of $SO(3)$?

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#linear-algebra #group-theory #lie-groups #lie-algebras #topological-groups

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