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News/Transient Amplification in Cascaded Gradient Methods: Exact Minimax Laws and Tracking without Resonance
arxiv
PublishedOctober 27, 2026 at 4:00 AM

Transient Amplification in Cascaded Gradient Methods: Exact Minimax Laws and Tracking without Resonance

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arXiv:2606.04031v3 Announce Type: replace Abstract: Leader-follower gradient iterations, including bilevel and two-time-scale methods, can exhibit large finite-time excursions despite asymptotic stability. For cascaded iterations with block matrix J = [[A,0],[C,D]], symmetric diagonal blocks of norm

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