MathOverflow
Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol
  • Member for 13 years, 11 months
  • Last seen this week
Profile Activity
Stats
65,696
reputation
1.5m
reached
716
answers
23
questions
Communities
View all
About

I'm a professor at UC Berkeley working predominantly in the field of low-dimensional topology.

Badges
View all badges
3
gold badges
184
silver badges
344
bronze badges
Top tags
View all tags
2,439
Score
285
Posts
39
Posts %
1,174
Score
156
Posts
21
Posts %
1,069
Score
101
Posts
14
Posts %
923
Score
110
Posts
15
Posts %
898
Score
99
Posts
13
Posts %
819
Score
95
Posts
13
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
72
Why is BG infinite dimensional for G finite ?
Nov 1, 2011
answer
58
Which math paper maximizes the ratio (importance)/(length)?
Apr 14, 2015
answer
53
Thurston's 24 questions: All settled?
Mar 25, 2017
answer
51
Question on the irrationality of $e$
Apr 14, 2015
answer
50
Not especially famous, long-open problems which anyone can understand
Jun 27, 2012
answer
48
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
42
Can a subset of the plane have nontrivial $H_2$ or $\pi_2$?
Dec 9, 2014
answer
42
Proofs without words
Dec 15, 2009
answer
42
Is differential topology a dying field?
May 30, 2019
Top Meta posts
0
2
12
Examples of mathematical exposition arising from MO answers
9
Best of MathOverflow, or papers inspired by MathOverflow
Top network posts
View all network posts
15
Minimal number of moves to construct the challenges (circle packings and regular polygons) in Ancient Greek Geometry?
10
Purpose of cusps
7
Dehn presentation proof reference request
6
How to construct a genus 2 surface from 8-gon?
5
Hyperbolic triangle and two points in Poincare disk

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.