Ryan Budney's user avatar
Ryan Budney's user avatar
Ryan Budney's user avatar
Ryan Budney
  • Member for 14 years, 5 months
  • Last seen this week
5 votes
1 answer
627 views

Ricci flow + Nash embedding

9 votes
1 answer
336 views

Mapping class groups are finitely generated

5 votes
3 answers
204 views

First usage of the terms pseudo-isotopy and concordance in manifold theory

3 votes
0 answers
131 views

Isotopy-classes of oriented Schoenflies spheres in $S^4$ is a group under oriented connect-sum

5 votes
0 answers
129 views

Smoothing tame topological knots, from an analytic perspective

11 votes
1 answer
576 views

Revisiting Gordon-Luecke theorem

23 votes
2 answers
796 views

Which homotopy classes $S^3 \to S^2$ lift to embeddings $S^3 \to S^2 \times D^3$?

6 votes
1 answer
311 views

Integrating the Riemann curvature tensor over a singular 2-disc

8 votes
0 answers
272 views

Smale's relative h-cobordism theorem

8 votes
0 answers
173 views

Stratification of space of labelled circles in the plane

14 votes
0 answers
438 views

Structure of Gordian graph of knots

10 votes
0 answers
127 views

Compatibility of spherical and hyperbolic geometry for fibred knots

7 votes
1 answer
385 views

High dimensional generalized Poincare hypothesis without the h-cobordism theorem?

5 votes
1 answer
1k views

The cyclic branched covers of "simple" knots in $S^3$

13 votes
1 answer
1k views

Mapping class groups of small Seifert-fibred 3-manifolds

11 votes
2 answers
524 views

Simplicial replacements in smoothing theory

23 votes
2 answers
4k views

Isotopy extension theorems

12 votes
2 answers
536 views

Curvature flows for PL closed curves in the plane?

8 votes
0 answers
170 views

Naive Reidemeister-Schreier for $\mathbb Z$ quotients

11 votes
0 answers
496 views

The spheres operad

16 votes
3 answers
1k views

Looking for "large knot" examples

8 votes
1 answer
189 views

A procedure to determine if an automorphism of a closed 2-manifold extends to an automorphism of a handlebody

24 votes
3 answers
2k views

Persistent homology of Gaussian fields in Euclidean space

11 votes
2 answers
583 views

Some mid-sized ¿hyperbolic? manifolds and SnapPea

12 votes
3 answers
1k views

Knot theory question: bridge number vs. min generators of fundamental group of complement

24 votes
0 answers
1k views

Monoid structure of oriented manifolds with connect sum

12 votes
1 answer
499 views

Lower bounds on dimensions of faithful representations of braid groups

9 votes
1 answer
613 views

Complexity of surfaces bounding knots in 4-ball and 3-sphere respectively

9 votes
2 answers
824 views

Torus knots in Euclidean space -- a symmetry argument

10 votes
2 answers
576 views

Embedding the product of three circles in the 4-sphere.