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Oct 27, 2011 at 10:20 vote accept Lasse Rempe
May 1, 2010 at 21:53 comment added Lasse Rempe Yes, this looks good. I was sort of hoping for a reference to the literature (as I'm essentially asking for a version of the constant rank theorem), so I will leave the question open for a while in case someone has a pointer!
May 1, 2010 at 15:45 history edited Harald Hanche-Olsen CC BY-SA 2.5
Better define the inverse first
May 1, 2010 at 0:18 history answered Harald Hanche-Olsen CC BY-SA 2.5