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math.OC2026
Nonsmooth Obstacles and Killed Resolvents in Reflected Stochastic Control
Louis Shuo Wang, Jiguang Yu, Ye Liang
We study an infinite-horizon optimal stopping problem for a normally reflected two-dimensional diffusion in the quadrant with nonsmooth max-type payoff \(G(x_1,x_2)=x_1\veeαx_2\).…
math.OC2026
Optimal Control in Age-Structured Populations: A Comparison of Rate-Control and Effort-Control
Jiguang Yu, Louis Shuo Wang, Ye Liang
This paper investigates the dynamics and optimal harvesting of age-structured populations governed by McKendrick--von Foerster equations, contrasting two distinct harvesting mechan…
math.OC2026
Size-Selective Threshold Harvesting under Nonlocal Crowding and Exogenous Recruitment
Jiguang Yu, Louis Shuo Wang, Ye Liang
In this paper, we formulate and analyze an original infinite-horizon bioeconomic optimal control problem for a nonlinear, size-structured fish population. Departing from standard e…