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math.AP2026
Geometric structure of singular free boundary points for the logarithmic obstacle problem
Lili Du, Xu Tang, Yi Zhou
In the previous work [Interfaces Free Bound., 19, 351--369, 2017], de Queiroz and Shahgholian established the optimal regularity of solutions for the ob…
math.AP2024
On a class of coupled obstacle systems
Lili Du, Xu Tang, Cong Wang
In this paper, we explore cooperative and competitive coupled obstacle systems, which, up to now, are new type obstacle systems and formed by coupling two equations belonging to cl…