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Globally optimal least-squares ARMA model identification is an eigenvalue problem.IEEE Control Systems Letters, 3(4):1062–1067

3 Pith papers cite this work. Polarity classification is still indexing.

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2026 3

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Rectangular Multispectral Perturbation Theory

math.NA · 2026-05-20 · unverdicted · novelty 6.0

Authors introduce backward error analysis, condition numbers, and pseudospectra for rectangular multispectral eigenvalue problems, noting that best-conditioned eigenvalues often align with globally optimal solutions in system identification examples.

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