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Bounds on smallest Eigenvalue of the Sum of a Standard Laplacian and a Diagonal Matrix
I'm trying to find upper boundaries on the smallest Eigenvalue $\lambda_1$ of $L + E$, where $L$ is a standard Laplacian of an unweighted digraph, with $\lambda_1(L) = 0$ and $E \in \{0,1\}^{n \times ...
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