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Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol
  • Member for 15 years, 1 month
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I'm a professor at UC Berkeley working predominantly in the field of low-dimensional topology.

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72
Why is BG infinite dimensional for G finite ?
Nov 1, 2011
answer
59
Which math paper maximizes the ratio (importance)/(length)?
Apr 14, 2015
answer
53
Thurston's 24 questions: All settled?
Mar 25, 2017
answer
52
Not especially famous, long-open problems which anyone can understand
Jun 27, 2012
answer
51
Question on the irrationality of $e$
Apr 14, 2015
answer
49
Are there "principal" bundles $S^1 \to S^3 \to S^2$ other then Hopf's? (They would be necessarily not locally trivial)
Aug 23, 2016
answer
47
Parallelizability of the Milnor's exotic spheres in dimension 7
Mar 11, 2011
answer
43
Is differential topology a dying field?
May 30, 2019
answer
42
Proofs without words
Dec 15, 2009
answer
42
Can a subset of the plane have nontrivial $H_2$ or $\pi_2$?
Dec 9, 2014
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Minimal number of moves to construct the challenges (circle packings and regular polygons) in Ancient Greek Geometry?
10
Purpose of cusps
8
How to construct a genus 2 surface from 8-gon?
7
Dehn presentation proof reference request
6
Are there examples of different knots with identical Jones polynomials and different Seifert Genus?