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Lean migration: Phases 0-2 (core lattice/chain, fixpoint, transport) - lean/ lake project pinned to Lean v4.17.0 + mathlib v4.17.0 - Spa.Lattice: fold monotonicity, FixedHeight/BoundedChains (LTSeries-based), FiniteHeightLattice, chain-bottom-is-least; the rest of Lattice.agda, Chain.agda and Equivalence.agda lift into mathlib (see LEAN_MIGRATION.md) - Spa.Fixedpoint: gas-based least-fixpoint computation (doStep/fix/aFix) - Spa.Isomorphism: FixedHeight transport along monotone inverse pairs Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-09 18:36:43 -07:00
leanprover/lean4:v4.17.0
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