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Turbo
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Characterizing matrices with rank constraint

Given matrix $M\in\Bbb Z_{\geq0}^{n\times n}$ with highest entry $b$, is there a nice method to characterize non-negative matrices $Q$ such that $$\mathsf{rank}(M+Q)\leq s\cdot\mathsf{rank}(Q)$$with some fixed $s>0$?

Turbo
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