If A is a $m\times n$ matrix $m\geq n$,A=QR is a reduced QR factorization. If R has k nonzero diagonal entries ($0\leq k
The rank of QR factorization
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linear-algebra
numerical-methods
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0There seems to be a typo -- you probably want to know the rank of something other than $k$? – 2012-09-19