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math.OC2026
M-duality in fixed-point problems for general normed spaces
Jongmin Lee, Sangyeop Woo, Ernest K. Ryu
Solving fixed-point problems by reducing residual bounds is one of the central approaches in fixed-point iteration, and, in particular, the Halpern iteration is known to effectivel…
math.OC2026
Policy Gradient Algorithms in Average-Reward Multichain MDPs
Jongmin Lee, Ernest K. Ryu
While there is an extensive body of research analyzing policy gradient methods for discounted cumulative-reward MDPs, prior work on policy gradient methods for average-reward MDPs…