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cs.GT2026
No Coin Left Behind: Maximizing Strategic Surplus Against No-Regret Dynamics
Yiheng Su, Emmanouil-Vasileios Vlatakis-Gkaragkounis
We investigate the strategic surplus obtainable against a Follow-the-Regularized-Leader (FTRL) learner with constant step size in two-player zero-sum games played o…
cs.GT2025
Breaking Barrier in Quantum Zero-Sum Games: Generalizing Metric Subregularity for Spectraplexes
Yiheng Su, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Pucheng Xiong
Quantum zero-sum games are bilinear saddle-point problems over density matrices. We study how their semidefinite geometry governs last-iterate convergence beyond existing $O(1/\var…