Timeline for Examples of common false beliefs in mathematics
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Dec 12, 2013 at 23:09 | comment | added | LSpice | To me, it is marvellous that the failure of this fact (as opposed to the truth of the corresponding fact for $\operatorname{SL}(2, \mathbb C)$) is a matter of topology; that is, from the point of view of algebraic groups, it comes from the fact that $\operatorname{SL}(2, \mathbb C)$ is simply connected, whereas $\operatorname{PSL}(2, \mathbb C)$ (which I had rather call $\operatorname{PGL}(2, \mathbb C)$) is not (it is at the opposite extreme---`adjoint'). | |
| May 11, 2011 at 13:00 | history | answered | Ben McKay | CC BY-SA 3.0 |