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Results tagged with matrices
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user 128341
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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Eigenvectors of sum of SO(3) matrices
Given two matrices $A,B\in SO(n)$, each describing a rotation by angles $\alpha$ and $\beta$ about axis $\bar{a},\bar{b}$, when does the sum $A+B$ have a real eigenvector independent of $\alpha,\beta$? … Also, what if the matrices just general SO(n) elements? …
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