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Questions

 
9
votes
4
answers
1k
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Primes p for which p - 1 has a large prime factor

nov 29 at 5:51 Mark Lewko 3,981918

2
9
votes
3
answers
1k
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Realizability of irreducible representations of dihedral groups

jul 9 11 at 1:06 Geoff Robinson 9,85612127

2
9
votes
0
answers
204
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Characteristic subgroup of nilpotent group that is not invariant under powering

mar 28 at 11:47 Vipul Naik 4,8651342

2
9
votes
2
answers
1k
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Example of Noetherian group (every subgroup is finitely generated) that is not finitely presented

may 26 10 at 22:20 HW 10.1k12366

2
8
votes
1
answer
246
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Extensions isomorphic as groups but not congruent or pseudo-congruent

may 10 11 at 3:55 unknown (google) 1

3
8
votes
2
answers
529
views

Notions of “independent” and “uncorrelated” for subsets of the natural numbers

feb 22 10 at 2:08 Michael Lugo 8,38522148

1
8
votes
2
answers
305
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Automorphism group objects

mar 11 10 at 18:55 James Griffin 1,11539

 
8
votes
6
answers
805
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Density of numbers having large prime divisors (formalizing heuristic probability argument)

sep 13 10 at 5:22 Charles 4,159826

4
8
votes
7
answers
1k
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Almost but not quite a homomorphism

feb 9 10 at 23:00 SB 27026

 
7
votes
2
answers
478
views

elementary equivalence of infinitary symmetric groups

jan 10 10 at 1:37 Joel David Hamkins 74.9k7187343

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