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Results tagged with matrices
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user 474498
Questions where the notion matrix has an important or crucial role (for the latter, note the tag matrix-theory for potential use). Matrices appear in various parts of mathematics, and this tag is typically combined with other tags to make the general subject clear, such as an appropriate top-level tag ra.rings-and-algebras, co.combinatorics, etc. and other tags that might be applicable. There are also several more specialized tags concerning matrices.
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Is there a relationship between infinity norm (or any other norms) of a vector and the trace...
I wish to know if there is a known relationship between the infinity norm (or any other norms) of a vector and the trace of its covariance matrix?
I have found a paper that used the following inequali …
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Double summation of matrices as constraints in convex optimization in CVX
^n\frac1n P_{ij}W_{ij}\\
P_{ij}\geq 0,\quad P_{ij}=0\text{ if }\{i,j\}\not\in E\\
\sum_{j} P_{ij} = 1,\quad \forall i
\end{cases}
\end{align}
In this problem, $W$, $P$, and $P_{ij}$ are $n\times{n}$ matrices …