Dylan Thurston's user avatar
Dylan Thurston's user avatar
Dylan Thurston's user avatar
Dylan Thurston
  • Member for 14 years
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54 votes
5 answers
2k views

Unusual symmetries of the Cayley-Menger determinant for the volume of tetrahedra

51 votes
3 answers
12k views

Spaces with same homotopy and homology groups that are not homotopy equivalent?

49 votes
2 answers
3k views

Can knot diagrams be monotonically simplified using under moves?

30 votes
3 answers
3k views

Examples for non-naturality of universal coefficients theorem

22 votes
1 answer
7k views

When is a quasi-isomorphism necessarily a homotopy equivalence?

21 votes
2 answers
669 views

Gluing hexagons to get a locally CAT(0) space

18 votes
3 answers
624 views

Classification of tangles?

16 votes
1 answer
714 views

Is the game Hanabi NEXPTIME-complete?

14 votes
3 answers
740 views

Does every CAT(0) space embed in a measurable integral of $\mathbb{R}$-trees?

14 votes
1 answer
1k views

Who proved that two homotopic embeddings of one surface in another are isotopic?

13 votes
2 answers
471 views

Geodesic current supported on a pencil?

13 votes
2 answers
1k views

Intrinsic characterization of Soergel bimodules?

12 votes
1 answer
318 views

What are the extremal CAT(0) metrics?

12 votes
1 answer
700 views

Injectivity of the Dehn-Nielsen-Baer map?

12 votes
0 answers
253 views

Computing the number of ways to delete vertices sequentially without disconnecting a graph

10 votes
2 answers
537 views

Is the Lisca-Matic bound (aka slice-Bennequin bound) strictly stronger than the Bennequin bound?

10 votes
2 answers
235 views

What are the possible linking matrices of a quasi-positive link?

10 votes
1 answer
468 views

Is the center of gravity in a CAT(0) space contained in the convex hull?

10 votes
1 answer
548 views

Length inequalities in trees and CAT(0) spaces

9 votes
3 answers
626 views

Terminology: Algebras where long strings of products are 0?

8 votes
0 answers
146 views

Extremal length of graphs in surfaces

8 votes
1 answer
385 views

To find a point in Teichmüller space or measured foliation, how many lengths of curves do you need?

7 votes
1 answer
2k views

Does midpoint-convex imply rationally convex?

7 votes
1 answer
299 views

Can a surface group act on a finite-valence simplicial tree?

6 votes
1 answer
235 views

Reference request: Can iterated torus links be mutated?

5 votes
1 answer
268 views

Is every triangulation of a Euclidean ball by convex tetrahedra shellable?

4 votes
2 answers
534 views

Fundamental domain for symmetric group $S_n$ acting on $\mathop{Gr}(k,n)$?

4 votes
2 answers
171 views

Bound areas of disks with respect to a quadratic differential

1 vote
0 answers
116 views

Estimating $\ell^p$ and $\ell^q$ norms on a convex cone