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Results tagged with eigenvalues
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user 148659
eigenvalues of matrices or operators
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Relation between the algebraic multiplicity of an eigenvalue and the subdiagonal elements of... [closed]
Show that if $T$ is a symmetric tridiagonal matrix and an eigenvalue $\lambda$ has multiplicity $k$, then at least $k−1$ subdiagonal elements of $T$ are zero.
If we consider a submatrix $B$ that …
