Ethan Dlugie's user avatar
Ethan Dlugie's user avatar
Ethan Dlugie's user avatar
Ethan Dlugie
  • Member for 4 years, 2 months
  • Last seen this week
14 votes
1 answer
565 views

How do we know there are no more Deligne–Mostow/Thurston lattices?

12 votes
2 answers
1k views

Group generated by two irrational plane rotations

12 votes
0 answers
247 views

Jacobi fields on non-geodesic curves

9 votes
0 answers
166 views

Configuration space of 4 points as an orbifold

8 votes
1 answer
399 views

When are groups generated by reflections in a triangle discrete?

6 votes
1 answer
408 views

What does it matter if a group has a non-elementary hyperbolic quotient?

6 votes
2 answers
755 views

Higher homotopy groups of irreducible 3-manifolds

5 votes
0 answers
192 views

Tools for computing from group presentations

4 votes
1 answer
260 views

Good algorithmic properties for quotients of braid groups

4 votes
1 answer
119 views

Inheritance of arithmeticity properties in orbifold strata

3 votes
1 answer
164 views

2-orbifolds that I expect to be hyperbolic, but they're nonnegatively curved

3 votes
1 answer
177 views

Squier's conjecture on Burau at roots of unity

3 votes
1 answer
252 views

$\pi_0(G)$ as a subgroup of a Lie group $G$

3 votes
1 answer
187 views

Multiplicative group of number field mod field norms of quadratic extension

2 votes
1 answer
193 views

Intersection pairing on $H_1$ of surfaces

1 vote
2 answers
307 views

Clarification on arithmetic groups example