Timeline for Angles of a triangle, in Hilbert spaces and in metric spaces
Current License: CC BY-SA 3.0
3 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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| Mar 19, 2013 at 12:53 | comment | added | Andreas Blass | In a Hilbert space, each triangle lies in a 2-dimensional subspace where lengths and angles are exactly as in Euclidean $\mathbb R^2$, so Euclidean facts about triangles remain true for triangles in Hilbert space. | |
| Mar 19, 2013 at 2:48 | history | asked | Snor | CC BY-SA 3.0 |