Talk:Affine space: Difference between revisions
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imported>Paul Wormer (New page: {{subpages}}) |
imported>Boris Tsirelson (→Remarks: new section) |
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== Remarks == | |||
As for me, the article is nice enough. Here are some remarks. First, about rigid motion and rotation (near the end): if a linear map is isometric but of determinant (-1), then we'd better not call it "rotation". Second, it could be noted that in fact an isometric map (in Euclidean space, I mean) is necessarily affine (even if linearity was not required). [[User:Boris Tsirelson|Boris Tsirelson]] 15:49, 23 July 2009 (UTC) | |||
Latest revision as of 09:49, 23 July 2009
Remarks
As for me, the article is nice enough. Here are some remarks. First, about rigid motion and rotation (near the end): if a linear map is isometric but of determinant (-1), then we'd better not call it "rotation". Second, it could be noted that in fact an isometric map (in Euclidean space, I mean) is necessarily affine (even if linearity was not required). Boris Tsirelson 15:49, 23 July 2009 (UTC)