Eigenvalue perturbation under bit- and phase-flips is studied for matrices written as linear combinations of permutations, with exact invariance of the dominant eigenvalue for positive coefficients.
Perturbation bounds for matrix eigen- values
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Error analysis of quantum operators written as a linear combination of permutations
Eigenvalue perturbation under bit- and phase-flips is studied for matrices written as linear combinations of permutations, with exact invariance of the dominant eigenvalue for positive coefficients.