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15
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Structure of $\Bbb Q_p/\Bbb Q$

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#number-theory #harmonic-analysis #p-adic-number-theory #profinite-groups #adeles
77
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Abelian subgroup of a profinite group

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#abstract-algebra #group-theory #profinite-groups
104
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Cohomology of closed subgroup of profinite group

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#group-theory #group-cohomology #profinite-groups
603
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Non-open subgroups of finite index in the idele class group of a number field

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#topological-groups #class-field-theory #profinite-groups
93
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Is the sequence $1\rightarrow[\widehat{F_2},\widehat{F_2}]\rightarrow \widehat{F_2}\rightarrow\widehat{\mathbb{Z}}^2\rightarrow 1$ split?

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#abstract-algebra #group-theory #profinite-groups
58
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Is every finite 2-generated group a quotient of a Frattini-free 2-generated group?

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#abstract-algebra #group-theory #finite-groups #profinite-groups
446
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Closure in profinite topology

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#group-theory #profinite-groups
273
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What does $\widehat{\mathbb{Z}}(1)$ mean?

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#abstract-algebra #group-theory #profinite-groups
509
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Is the commutator subgroup of a profinite group closed?

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#profinite-groups
40
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Pro-alternating completion of a free group

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#group-theory #profinite-groups
273
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homomorphism of profinite groups

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#abstract-algebra #group-theory #profinite-groups
204
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Describing the clopen sets of a profinite group

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#abstract-algebra #general-topology #topological-groups #profinite-groups
172
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Number of subgroup of finite index

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#group-theory #topological-groups #profinite-groups
164
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Open Profinite Subgroup $\Rightarrow$ Profinite Group

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#abstract-algebra #general-topology #group-theory #topological-groups #profinite-groups
54
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Probability of generating group

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#group-theory #topological-groups #profinite-groups

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