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Results tagged with matrices
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user 504123
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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Quickly determining if a matrix has any PSD completion
I can't comment, so I'll write this as an answer: The problem seems to me to be equivalent to what is called "PSDMCP" here, with a pretty significant research history behind it and a strong connection …
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