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math.CO2026
A new lower bound for the sixth Schur number:
Zhiyang Chen, Ligeng Zhu, Fan Long
We give an explicit partition of into six sum-free sets, establishing . This improves the lower bound 536 of Fredricksen and Sweet (2000). Known rec…
cs.CR2026
Ghost-Filled Orders: Detecting and Testing Atomicity Violations in Non-Custodial Prediction Markets
Zhiyang Chen, Fan Long, Zhendong Su
Blockchain based prediction markets combine offchain order management with onchain settlement. This architecture supports user controlled custody, since users keep funds in wallets…