At the Lean FRO, Kim Morrison, a Senior Research Software Engineer, recently ran an experiment that went well beyond our expectations. An AI agent converted zlib, a widely used C compression library embedded in countless systems, to Lean, with minimal human guidance. No special tooling was built. It was Claude, a general-purpose AI, with no special training for theorem proving, out of the box. The workflow had four steps. First, the AI produced a clean, readable Lean implementation of the zlib compression format, including the DEFLATE algorithm at its core. Second, the Lean version passed the library’s existing test suite, confirming behavioral equivalence. Third, key properties were stated and proved, not as tests, but as mathematical theorems. The capstone theorem:
（三）扰乱公共汽车、电车、城市轨道交通车辆、火车、船舶、航空器或者其他公共交通工具上的秩序的；
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To what extent developer activity is tracked across the ecosystem
“I have a very high bar for work and excellence,” he said.
Ранее глава США Дональд Трамп заявил, что развитие ракетной программы Ирана представляло бы колоссальную угрозу безопасности Соединенных Штатов. По его словам, к моменту начала операции США Тегеран уже имел в своем арсенале ракеты, способные нанести удар по Европе и американским военным базам в регионе.