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Jan 23, 2013 at 19:57 history edited Chris Gerig CC BY-SA 3.0
deleted 4 characters in body; edited tags
Jan 20, 2013 at 21:41 comment added Allen Knutson Well, up to multiple.
Jan 20, 2013 at 21:41 comment added Allen Knutson Up to conjugacy the unique maximal compact subgroup of $Diff(S^2)$ is $SO(3)$, within which $S^1$ is a maximal torus, so yes!
Jan 20, 2013 at 0:59 comment added Mariano Suárez-Álvarez Presumably the action is rotation on the north-south axis.
Jan 20, 2013 at 0:21 answer added Allen Knutson timeline score: 2
Jan 19, 2013 at 17:58 history edited Angelo CC BY-SA 3.0
added 16 characters in body
Jan 19, 2013 at 17:11 history asked MiliskWall CC BY-SA 3.0