Timeline for Examples of common false beliefs in mathematics
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 4, 2020 at 19:46 | comment | added | Sebastian Goette | @RobertFurber That's right. And because $BO(1)$ and $BU(1)$ are Eilenberg-Mac Lane spaces, you can immediately classify real and complex line bundles by a single cohomology class. But not quaternionic line bundles. | |
| Mar 3, 2020 at 15:55 | comment | added | Robert Furber | Although it's not an Eilenberg-MacLane space, $\mathbb{HP}^\infty$ is a classifying space (specifically $B(SU(2))$), just as $\mathbb{CP}^\infty = B(U(1))$ and $\mathbb{RP}^\infty = B(\mathbb{Z}/(2))$. | |
| S Jan 29, 2016 at 13:59 | history | answered | Sebastian Goette | CC BY-SA 3.0 | |
| S Jan 29, 2016 at 13:59 | history | made wiki | Post Made Community Wiki by Sebastian Goette |