William's user avatar
William's user avatar
William's user avatar
William
  • Member for 12 years, 6 months
22 votes
2 answers
1k views

Eversion of the 6-sphere in 7-space

18 votes
4 answers
3k views

When is a finite cw-complex a compact topological manifold?

10 votes
2 answers
737 views

Higher dimensional Heegaard splittings?

7 votes
0 answers
218 views

Who defined the Inertia Group $I(M^n)\subset\Theta_n$ of a smooth manifold?

6 votes
1 answer
756 views

When is a Topological pushout also a Smooth pushout?

6 votes
0 answers
389 views

Smooth manifold with non-trivial inertia group? (wrt homotopy spheres)

5 votes
1 answer
717 views

Characteristic classes of a fibered sum

1 vote
1 answer
241 views

The inertia subgroup of `$\Theta_n$` for Lie groups

1 vote
3 answers
610 views

Treating the Connected Sum (and other constructions) as a Push-out