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Results tagged with linear-algebra
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user 109710
Questions about the properties of vector spaces and linear transformations, including linear systems in general.
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Bounding the norm of a contraction matrix
Suppose I have positive semidefinite matrices $A$ and $B$. Then
$$\begin{bmatrix} A & X\\ X^T & B\end{bmatrix} \succeq 0$$
for $X = A^{\frac 12} C B^{\frac 12}$, where $C$ is the contraction matrix …
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