Timeline for Is this affine-subspace analogue of a Grassmannian a classifying space?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 21, 2015 at 17:51 | comment | added | Sebastian Goette | @Michael Albanese: yes, and I edited the answer. | |
| Oct 21, 2015 at 17:50 | history | edited | Sebastian Goette | CC BY-SA 3.0 |
Small explanation added
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| Oct 21, 2015 at 16:56 | comment | added | Michael Albanese | I'm not sure what you mean by $rE$. You can write $E$ as $a + P$ where $P$ is a plane through the origin parallel to $E$ and $a \in E$, then the deformation retraction should be $ra + P$. Is that what you mean? | |
| Oct 21, 2015 at 14:53 | comment | added | Sebastian Goette | Yes, I think so, but regard $E\subset\Bbbk^n$ as a plane, not as a set of points. Then the limit of $rE$ as $r\to 0$ is a plane through the origin, and not just $\{0\}$. Does that answer your question? | |
| Oct 21, 2015 at 14:41 | comment | added | Michael Albanese | Is that really the deformation retraction? | |
| Oct 21, 2015 at 9:38 | vote | accept | Shi Q. | ||
| Oct 21, 2015 at 9:04 | history | answered | Sebastian Goette | CC BY-SA 3.0 |