130k Lines of Formal Topology in Two Weeks: Simple and Cheap Autoformalization for Everyone?
Summary
The arXiv paper demonstrates a low-cost, AI-assisted autoformalization workflow that pairs an LLM with a fast proof checker to formalize topology. It reports 130k–160k lines of formalized topology produced in two weeks at about $100 cost, including proofs like Urysohn's lemma and the Tietze extension theorem, suggesting autoformalization could become widespread in 2026.