Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol's user avatar
Ian Agol
  • Member for 14 years, 5 months
  • Last seen this week
6 votes
Accepted

Properties of the Burnside kernel

6 votes

A finite index subgroup of the Mapping Class Group

6 votes

Helix translates as geodesics

6 votes

Is there a classification of open subsets of euclidean space up to homeomorphism?

6 votes

Cheap, non-constructive, free group generating rotations for Banach-Tarski

6 votes
Accepted

Lower bounds (or less) for the period of sqrt(D) and related sequences

6 votes

Kähler structure on cotangent bundle?

6 votes

Math puzzles for dinner

6 votes

To differently gluing of two Riemann surfaces with boundary we get different surfaces

6 votes

Schwarz Lemma in terms of conformal surfaces or holomorphic curves?

6 votes
Accepted

What functions are not represented by their power series?

6 votes

Is there an elementary proof of a result about the parity of the period of the repeating block in the continued fraction expansion of square roots

6 votes
Accepted

relationship between borromean rings and hanging-a-picture-from-three-nails puzzle?

6 votes

Intuition behind existence of moduli space of stable curves

6 votes
Accepted

Growth of groups versus Schreier graphs

6 votes

Primitive elements in a free group of rank three

6 votes

Homotopy class of a homeomorphism

6 votes
Accepted

Growth of knots possible with rope of length L

6 votes
Accepted

Fundamental domain for group generated by reflections in -2 curves

6 votes

Laplace-Beltrami Operator on Surfaces

6 votes

Why the quarter in the $\frac{1}{4}$-pinched sphere theorem?

6 votes
Accepted

Magnus hierarchy of 1-related groups

6 votes
Accepted

Suppose $\Gamma_m$ is a principal congruence subgroup of level m contained in a finite index subgroup $\Gamma$ of $SL(n,\mathbb Z)$. Is $\Gamma_m$ characteristic in $\Gamma$?

6 votes

A degree of an arbitrary polynomial knot

6 votes

Computing signature

6 votes
Accepted

Combination theorems for discrete subgroups of isometry groups

6 votes

Extension of covering map

6 votes

Conclusion of Hurewicz for $H_3$ without vanishing fundamental group?

6 votes
Accepted

Irreducibility of 3-manifolds with (non)empty boundary

6 votes
Accepted

Ricci flow proof of isoperimetric inequality

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