38

Questions
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8
26
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1
answer
2k
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Is the set of primes “translation-finite”?

nov 19 09 at 6:22 Yemon Choi 8,456●1●19●44

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11
votes
2
answers
804
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Approximating operators on Banach spaces by bounded operators on a proper dense subspace

jul 11 10 at 11:35 Bill Johnson 14.4k●1●33●60

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15
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2
answers
702
views

Groups of order $n$ with a character whose degree is at least $0.8\sqrt{n}$ (say)

jun 23 11 at 23:15 Geoff Robinson 9,916●1●21●27

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7
votes
2
answers
671
views

Closed, complemented subspaces of $l^1(X)$ when $X$ is uncountable

dec 13 09 at 21:37 Bill Johnson 14.4k●1●33●60

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10
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4
answers
662
views

Can we bound degrees of complex irreps in terms of the average conjugacy class size?

apr 30 11 at 7:27 Geoff Robinson 9,916●1●21●27

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2
votes
5
answers
660
views

Source needed (at final-year undergrad level) for the double cover of SO(3) by SU(2)

jan 17 10 at 0:36 Harry Gindi 8,878●2●33●96

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13
votes
2
answers
603
views

“Explicit” embedding of $\ell^1$ as a closed subalgebra of a direct sum of matrix algebras

dec 18 10 at 10:31 Mikael de la Salle 3,456●5●16

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16
votes
2
answers
594
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Does left-invertible imply invertible in full group C*-algebras (discrete case)?

oct 28 11 at 7:31 Andreas Thom 13.1k●1●23●64

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2
votes
2
answers
532
views

Reference request for two-generator subgroups of a free group

sep 26 10 at 3:47 Yemon Choi 8,456●1●19●44

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7
votes
3
answers
512
views

characters on a finite group with `extremal' behaviour

jan 6 12 at 2:43 Yemon Choi 8,456●1●19●44

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