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math.LO2026
Open Problems in Mathematical Logic
George Barmpalias, Su Gao, Jialiang He +8
These open problems were presented in the Problem Sessions held during the Tianyuan Workshop on Definability and Computation, June 22-26, 2026. The problems are organized into sect…
math.LO2026
Ramsey Property and Pathological Sets: Almost Disjointness, Independence and Other Maximal Objects
Jialiang He, Jintao Luo, Shuguo Zhang
We show that under , if the Ramsey property holds for all sets in a good pointclass , then there is no MAD family in , proving a long-s…