Xiaomi MiMo 2.6 Pro formalizes Li–Yorke chaos theorem in 6,000+ lines of verified Lean
bookwormengr · x · 2026-09-22
Xiaomi says MiMo 2.6 Pro helped researchers fully formalize the main theorem of the classic Li–Yorke paper Period Three Implies Chaos in Lean 4. Multiple subagents collaborated on theorem formulation and proof formalization under a research-guided exploration strategy, producing 6,000+ lines verified by Lean's kernel with no unfinished placeholders. Notably, the model was not post-trained specifically for Lean. The poster predicts Millennium Prize solutions will soon come from multiple labs — and we'll adapt fast enough to treat them as ordinary.
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