Timeline for Least number of charts to describe a given manifold
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Oct 26, 2009 at 18:06 | comment | added | Thomas Sauvaget | Yeah, I figured out after asking, so really the LS category measures something different, thanks! | |
| Oct 26, 2009 at 17:53 | comment | added | j.c. | Note that the two open sets in Reid's answer may not be made contractible in general. Indeed, for orientable 2-manifolds, 3 contractible sets are required, except for S^2, where 2 are required. | |
| Oct 26, 2009 at 16:54 | history | answered | Reid Barton | CC BY-SA 2.5 |