Live Lean 4 formalization of Category τ — 450 modules, 125K lines, 4,332 theorems, 0 sorry in Books I–VI
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Updated
Apr 14, 2026 - Lean
Live Lean 4 formalization of Category τ — 450 modules, 125K lines, 4,332 theorems, 0 sorry in Books I–VI
Canonical publication + archival home — edition-bound assets, guided tours, frozen snapshots
Active contributor-facing research workspace — notebooks, scripts, explorations
Organization profile and shared community-health files for the Panta Rhei Research Program
ARCHIVED — Superseded by taulib (live) and books (frozen snapshot)
Community hub — onboarding, contribution guidance, discussions
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