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Jul 4, 2013 at 21:54 vote accept Italo
Jun 29, 2013 at 22:15 answer added Will Sawin timeline score: 3
Jun 29, 2013 at 12:42 history edited Italo CC BY-SA 3.0
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Jun 29, 2013 at 11:59 comment added Italo @BS: Yes, i assume that $G$ acts freely on $S^{2n-1}$. If in the question is not clear i assume the action of $G$ is linear (the one of the matrix group).
Jun 29, 2013 at 11:55 comment added BS. What do you mean exactly by "the origin is the only singular point" ? Does $G$ act freely on $S^{2n-1}$ ?
Jun 29, 2013 at 10:02 comment added Qiaochu Yuan The ambient group is $\text{U}(n)$ without loss of generality ($G$ preserves some inner product on $\mathbb{C}^n$ by the standard averaging argument).
Jun 29, 2013 at 9:57 history asked Italo CC BY-SA 3.0