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math.OC2026
Complexity of Output Feedback Stabilization
Amir Ali Ahmadi, Abraar Chaudhry, Ijay Narang +1
We show that unless P = NP, there cannot be a polynomial-time (or even pseudo-polynomial-time) algorithm for output feedback stabilization of a linear dynamical system with a linea…
math.OC2026
Powell-Style Model-Based Derivative-Free Optimization with Complexity Guarantees
Abraar Chaudhry, Katya Scheinberg, Scholar Sun
We propose variants of model-based trust region derivative-free algorithms that are closest to methods initially proposed and implemented by Powell. These methods rely on low degre…