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Dec 11, 2010 at 14:13 comment added darij grinberg Thanks a lot! I didn't believe the Schur complement works for matrices that are not square... stupid me. I've fixed your text in a few places.
Dec 11, 2010 at 14:08 history edited darij grinberg CC BY-SA 2.5
formatting fixed; added 15 characters in body; added 18 characters in body
Dec 11, 2010 at 9:25 comment added Denis Serre @darij. See my new edition.
Dec 11, 2010 at 9:22 history edited Denis Serre CC BY-SA 2.5
deleted 18 characters in body; added 1 characters in body
Dec 11, 2010 at 9:17 history edited Denis Serre CC BY-SA 2.5
added 1488 characters in body
Dec 10, 2010 at 20:00 comment added darij grinberg Thanks, but I know of this. The question is how you apply it to the $n>2m$ case.
Dec 10, 2010 at 17:50 vote accept HenrikRüping
Dec 10, 2010 at 17:14 history edited Denis Serre CC BY-SA 2.5
added 668 characters in body
Dec 10, 2010 at 16:35 comment added darij grinberg Could you be more precise about the way you use Schur's (complement?) formula`?
Dec 10, 2010 at 16:11 history answered Denis Serre CC BY-SA 2.5