archipelago's user avatar
archipelago's user avatar
archipelago's user avatar
archipelago
  • Member for 11 years
  • Last seen more than a month ago
35 votes
2 answers
5k views

Why should have Peter May worked with CGWH instead of CGH in "The Geometry of Iterated Loop Space"?

26 votes
2 answers
2k views

Are there geometrically formal manifolds, which are not rationally elliptic?

20 votes
2 answers
2k views

Is every topological (resp. Lie-) group the isometrygroup of a metric space (resp. Riemannian manifold)?

18 votes
1 answer
995 views

Is the restriction map for embeddings of manifolds with boundary a fibration?

14 votes
2 answers
2k views

Reference Request: Compact manifolds with boundary have the homotopy type of a CW-complex

12 votes
1 answer
701 views

Homotopy spheres with vanishing and non-vanishing $\alpha$-invariant

11 votes
4 answers
1k views

Topological Grothendieck Construction

11 votes
1 answer
888 views

Examples of applications of the Freyd-Mitchell embedding theorem.

8 votes
2 answers
2k views

Properties of quotient categories.

8 votes
1 answer
603 views

Reference Request: Grouplike Algebras over the little $n$-cubes operad are $n$-fold loop spaces