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ATLAS is a large-scale Lean 4 library of textbook mathematics autoformalized by LLMs, covering 26 books with over 46,000 declarations. It provides reusable formal building blocks for human and machine-driven formalization.
MathAtlas is a large-scale benchmark for autoformalization of graduate-level mathematics, containing ~52k theorems and definitions extracted from 103 textbooks, with a mathematical dependency graph of ~178k relations. Experiments show state-of-the-art models achieve at most 9.8% correctness, highlighting the difficulty.