leanprover-community/mathlib4
Apr 2026 – Jul 2026
3 Months active
Languages Used
Lean
Technical Skills
algebrafunctional programmingmathematical proofstype theoryformal verificationmathematics
Elias Judin
PROFILE
Elias Judin
Over three months, contributed to leanprover-community/mathlib4 by generalizing the MvPolynomial API to support arbitrary uniquely inhabited index types, broadening its algebraic applicability. This involved extending equivalence constructs, introducing migration paths, and maintaining backward compatibility through deprecated aliases. Developed new coefficient identification lemmas to strengthen reasoning about multivariable polynomials under algebraic equivalence, enhancing proof automation and robustness. Further work established API parity between multivariate and univariate polynomial evaluation, enabling consistent semantics and smoother cross-module reuse. All contributions were implemented in Lean, leveraging skills in algebraic geometry, formal verification, and type theory to improve the reliability and extensibility of the library.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
3
Lines of code
186
Activity Months3
Your Network
315 peopleShared Repositories
315
Amelia LivingstonMember
张守信(Shouxin Zhang)Member
Jingting WangMember
themathqueenMember
Kamille BidanMember
Hao ShenMember
Tianyi ZhaoMember
FMLJohnMember
Aaron HillMember
Work History
July 2026
1 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary focusing on key delivery and impact for leanprover-community/mathlib4. The primary work this month was delivering API parity between the multivariate polynomial API and the existing univariate polynomial API, along with parity lemmas to support consistent semantics across modules.
1 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary focusing on key delivery and impact for leanprover-community/mathlib4. The primary work this month was delivering API parity between the multivariate polynomial API and the existing univariate polynomial API, along with parity lemmas to support consistent semantics across modules.
July 2026
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for leanprover-community/mathlib4: Focused feature delivery in polynomial algebra under algebraic equivalence. Implemented coefficient identification lemmas to support uniqueAlgEquiv, strengthening coefficient reasoning in multivariable polynomials and enabling more robust algebraic proofs.
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for leanprover-community/mathlib4: Focused feature delivery in polynomial algebra under algebraic equivalence. Implemented coefficient identification lemmas to support uniqueAlgEquiv, strengthening coefficient reasoning in multivariable polynomials and enabling more robust algebraic proofs.
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly work summary for leanprover-community/mathlib4. Focused on expanding the MvPolynomial API to support arbitrary index types and prepared a migration path. Generalized pUnitAlgEquiv to uniqueAlgEquiv for any uniquely inhabited index type, preserving backward-compatible aliases. Added autoformalised proofs via Aristotle-Harmonic. Initiated downstream migration plans and documented rationale. The change broadens applicability of the equivalence MvPolynomial σ R ≃ₐ[R] R[X], enabling more generic usages and smoother future extensions.
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly work summary for leanprover-community/mathlib4. Focused on expanding the MvPolynomial API to support arbitrary index types and prepared a migration path. Generalized pUnitAlgEquiv to uniqueAlgEquiv for any uniquely inhabited index type, preserving backward-compatible aliases. Added autoformalised proofs via Aristotle-Harmonic. Initiated downstream migration plans and documented rationale. The change broadens applicability of the equivalence MvPolynomial σ R ≃ₐ[R] R[X], enabling more generic usages and smoother future extensions.
April 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage46.6%
Skills & Technologies
Programming Languages
Lean
Technical Skills
Algebraic GeometryFormal VerificationLeanalgebraformal verificationfunctional programmingmathematical proofsmathematicstheorem provingtype theory
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