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Results tagged with matrices
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user 42371
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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How does appending a row and a column change eigenvalues of a non-symmetric matrix?
This question asks about the changes in eigenvalues when a row and a column is added to a symmetric matrix. Cauchy's interlacing theorem gives us a way to understand this case.
I am interested in kno …
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