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6 votes

Interpolation between two matrices so that $L^p$ norm is controlled

The constraint that $||Ax||_1 = ||x||_1$ is actually a very strong constraint. It actually implies that $A$ is a signed-permutation matrix, that is the matrix $A \in \{-1,0,1\}^{n \times n}$ and $A$ h …
Matt Werenski's user avatar