Lean for Working Algebraists: a Lean 4 introduction for mathematicians, building groups, rings, modules, and quiver path algebras from scratch. Free PDF, no programming background assumed.
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Updated
Aug 15, 2026 - TeX
Lean for Working Algebraists: a Lean 4 introduction for mathematicians, building groups, rings, modules, and quiver path algebras from scratch. Free PDF, no programming background assumed.
Lean 4 formalization companion and corrected LaTeX/PDF for resonance determinants and uniform cyclotomic towers.
First machine-verified formalization of the natural proofs barrier (Razborov-Rudich 1997) in Lean 4. Zero sorry obligations.
Mathlib PR kit: plane trees counted by Catalan numbers
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