Is there a specific name for matrices with nonsingular principal submatrices?
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2 Answers
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I've heard them called "strongly nonsingular matrices" in numerical linear algebra. Google that and you'll find some literature.
answered Nov 18, 2009 at 18:31
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"matrices with Gauss decomposition" is the shortest thing that comes to mind. I mean other than $B_-TB_+$.
answered Nov 13, 2009 at 2:14