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15
122
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Question about properly discontinuous actions in a metric space

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#general-topology #group-theory #group-actions #topological-groups
46
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Is multiplication by a fixed element an open map in a topological semigroup?

Published on
#topological-groups #semigroups #inverse-semigroups
26
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Prooving that the residual semi-norm is a norm if and only if the subgroup is closed

Published on
#general-topology #topological-groups
49
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Uniquely Ergodic Transformation on compact groups

Published on
#dynamical-systems #topological-groups #ergodic-theory #topological-dynamics
41
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Can all the entourages of a uniform structure be transitive?

Published on
#general-topology #topological-groups #uniform-spaces
181
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Does every extension of a finite group by $\mathbb{R}^n$ split?

Published on
#group-theory #lie-groups #topological-groups #group-cohomology #group-extensions
249
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Are Haar measures semifinite?

Published on
#measure-theory #harmonic-analysis #topological-groups #locally-compact-groups #haar-measure
45
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What is the relationship between measurable or continuos cross-sections?

Published on
#measure-theory #group-actions #topological-groups #haar-measure
119
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If the topology of locally compact topological group G is not discrete, then haar measure of singlton is zero $\mu(\{x\})=0$

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#measure-theory #harmonic-analysis #topological-groups #locally-compact-groups #haar-measure
308
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Haar measures are decomposable

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#measure-theory #harmonic-analysis #topological-groups #locally-compact-groups #haar-measure
73
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"Third isomorphism theorem" for topological group action

Published on
#smooth-manifolds #group-actions #topological-groups #projective-space
64
Views

Why aren't all surjective continuous homomorphisms of topological groups open?

Published on
#topological-groups #quotient-spaces #quotient-group #open-map #continuous-homomorphisms
231
Views

Are Haar measures localizable?

Published on
#measure-theory #harmonic-analysis #topological-groups #locally-compact-groups #haar-measure
65
Views

Does there exist a torsion-free compact Hausdorff topological group?

Published on
#group-theory #topological-groups #torsion-groups
30
Views

Existance of continuous section

Published on
#abstract-algebra #topological-groups #profinite-groups

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