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:
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Omni uses Postgres (ParadeDB) for everything: BM25 full-text search, pgvector semantic search, and all application data. No Elasticsearch, no dedicated vector database. One database to tune, backup, and monitor.
2 марта мадридцы под руководством Арбелоа потерпели второе поражение подряд в чемпионате Испании, уступив «Хетафе» со счетом 0:1. В предыдущем туре сливочные проиграли «Осасуне» со счетом 1:2. В данный момент «Реал» идет на втором месте в турнирной таблице, набрав 60 очков в 26 матчах. Отставание команды от лидирующей «Барселоны» составляет 4 очка.，详情可参考爱思助手下载最新版本