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when toggle format what by license comment
Apr 12, 2017 at 1:46 comment added benblumsmith You're right. Will delete.
Apr 11, 2017 at 15:33 comment added Eilon Note that in your example, the first coordinate of $r^1$ is not 0, while the first condition requires that $r^i_i=0$ for every $i$.
Apr 10, 2017 at 7:46 history edited Eilon CC BY-SA 3.0
edited body
Apr 9, 2017 at 7:47 history asked Eilon CC BY-SA 3.0