Timeline for Is this lemma in elementary linear algebra new?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Sep 6, 2013 at 20:24 | vote | accept | George Bergman | ||
| Sep 6, 2013 at 19:20 | comment | added | Martin Brandenburg | This is a nice proof. Although it seems to be algebraic, I think it is geometric in disguise. Perhaps someone can formulate this proof coordinate-free, and/or in terms of the the intersection of $\mathbb{P}(V) \subseteq \mathbb{P}(A \otimes B)$ with $\mathbb{P}(A) \times \mathbb{P}(B) \hookrightarrow \mathbb{P}(A \otimes B)$? | |
| Sep 6, 2013 at 19:16 | history | edited | Martin Brandenburg | CC BY-SA 3.0 |
1) fixed a typo, 2) replaced twice $M \in V \mapsto$ by $V \ni M \mapsto$, because M (not V) gets mapped.
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| Sep 6, 2013 at 16:57 | history | edited | Clément de Seguins Pazzis | CC BY-SA 3.0 |
added 41 characters in body
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| Sep 6, 2013 at 16:50 | history | answered | Clément de Seguins Pazzis | CC BY-SA 3.0 |