Timeline for Examples of CAT(0)-groups
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 15, 2011 at 10:37 | comment | added | Igor Rivin | @Anon: I believe that this is why the T is in CAT(0)... | |
| Dec 15, 2011 at 10:01 | comment | added | Anon | To be fair, it is not a trivial fact that a simply connected Riemannian manifold whose sectional curvatures are all nonpositive is CAT(0). | |
| Dec 11, 2011 at 10:08 | comment | added | Igor Rivin | @ε-δ: I believe that is the essence of Alain's commentary... | |
| Dec 10, 2011 at 21:22 | comment | added | ε-δ | Igor, you should say "yes by definition", but not "yes, since". | |
| Dec 10, 2011 at 18:33 | comment | added | Alain Valette | By definition, a group is $CAT(0)$ if it acts isometrically, properly and co-compactly on a $CAT(0)$ space... So it is enough to say that $M$ is $CAT(0)$. See aimath.org/pggt/… | |
| Dec 10, 2011 at 16:16 | history | answered | Igor Rivin | CC BY-SA 3.0 |