President Emmanuel Macron announced that France would be changing its nuclear doctrine
В России спрогнозировали стабильное изменение цен на топливо14:55
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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:
Microsoft published the source code of some of its earliest products, but nothing pertinent to my quest. The GW-BASIC source code is scarcely useful since it’s only an interpreter. It might possibly help in future to decode the BASIC runtime, but this project had no use for it.