Timeline for Homotopy classes of continuous functions $\Sigma_g \longrightarrow \mathbb{R}P^2$
Current License: CC BY-SA 3.0
8 events
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
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| Mar 27, 2017 at 11:14 | history | edited | Gregory Arone | CC BY-SA 3.0 |
added 13 characters in body
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| Mar 7, 2017 at 15:16 | comment | added | Ronnie Brown | I mention that in order to show an idea of available methods, Example 12.3.13 of the book "Nonabelian Algebraic Topology", advertised at groupoids.org.uk/nonab-a-t.html , gives an example of calculating some homotopy classes of maps $K \to Y$ where $K$ is the product of two copies of $\mathbb RP^2$ and $Y$ is $\mathbb RP^3$ with homotopy groups killed above dimension 3. | |
| Mar 6, 2017 at 8:29 | comment | added | Selim G | Thank you very much for all these reference I found everything I need in it :) | |
| Mar 6, 2017 at 8:29 | vote | accept | Selim G | ||
| Mar 5, 2017 at 19:44 | comment | added | Sebastian Goette | You are right of course. I was wondering if a map to non-orientable surface can have an integer-valued degree, but at least for $S^2$ this is possible. Maybe I should have read Ellis' paper more carefully. | |
| Mar 5, 2017 at 19:42 | history | answered | Gregory Arone | CC BY-SA 3.0 |