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Commits on Jul 31, 2026
Update toolchain and remove direct mathlib dependency (#73)
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Commits on Jul 26, 2026
remove needless comment
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Merge branch 'ex-48-fixed'
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Exercise 4.8 - changed example to theorem
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Commits on Jul 25, 2026
Merge branch 'ex-41-fixed'
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refactor(chapter3): drop splitInTwoSL from simp
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refactor(chapter4): rework Ex 4.1 to follow the statement faithfully
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Commits on Jul 23, 2026
Exercise 4.8 solved
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Exercise 4.1 solved
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refactor(chapter3): RAList namespace
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review changes
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Commits on Jul 21, 2026
Exercise 3.10 solved (#66)
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chapter3: fix order of definitions
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Commits on Jul 10, 2026
docs(chapter1): document foldl fusion law in Exercise 1.18
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Commits on Jul 9, 2026
refactor(chapter1): simplify Exercise 1.17 fusion proofs
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Exercise 1.17 solved (#65)
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Commits on Jul 8, 2026
feat(chapter3): prove dropWhileSL, initsSL and inits₁ = inits₂
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Commits on Jul 7, 2026
feat(chapter3): prove SymList lemmas and refactor concat time bounds
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Commits on Jun 23, 2026
feat(chapter2): add TimeM complexity proofs for concat₁ and concat₂
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Commits on Jun 16, 2026
chore: remove assignment files and simplify termination proofs
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Commits on Jun 15, 2026
fix(chapter1): simplify proofs and move inits/tails to Chapter1-Ex
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feat(chapter1): add termination proofs and collapse equivalence
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Commits on Jun 11, 2026
fix: solve perms1 and perms2 in chapter1
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Commits on Dec 17, 2025
chore: upgrade to Lean v4.27.0-rc1
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Commits on Dec 10, 2025
fix: minor syntax adjustment
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fix: minor syntax adjustment
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fix(chapter4): complete flatten proof (#62)
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feat(chapter5): prove reverse equivalence (#64)
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Commits on Dec 3, 2025
fix(chapter1): complete scanr proof in Ex 1.12.
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test(chapter3): improve fetch function examples
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Commits on Nov 14, 2025
fix README
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update README
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Commits on Nov 13, 2025
fix : lakefile.toml default target
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update workflow
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update worflow and README flag
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