Timeline for Poincaré 3-homology sphere
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 17, 2012 at 14:20 | comment | added | tweetie-bird | Wouldn't Whitney embedding theorem need 6 dimensions? Am I missing something? Wikipedia says you start with an immersion with transverse self-intersections, then you fix this. (I paraphrase.) | |
| Nov 15, 2012 at 15:34 | comment | added | Flux | ...but I cannot understand why in this case the Whitney embedding result doesn't work...it hold for a general smooth manifold... is a homology 3-sphere not smooth? | |
| Nov 15, 2012 at 13:16 | comment | added | j.c. | They admit topological embeddings but not necessarily smooth embeddings; the page you cite is specific about that point. | |
| Nov 14, 2012 at 21:42 | comment | added | Flux | In the book "4-Manifolds and Kirby Calculus" by Robert E. Gompf,András I. Stipsicz, pag.345. | |
| Nov 14, 2012 at 20:11 | history | answered | Flux | CC BY-SA 3.0 |