Kevin Buzzard
Professor Of Mathematics
London, England, United Kingdom
Summary
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RockstarKevin Buzzard is a Professor of Mathematics at Imperial College London with eight years of software-centric experience as a core maintainer of mathlib, the widely used Lean theorem prover library. He combines deep pure-math expertise with hands-on engineering, driving foundational algebraic hierarchies and tactics in mathlib4 while maintaining and modernizing legacy mathlib3 code. Currently funded by the EPSRC to formalize a proof of Fermat’s Last Theorem in Lean, he blends ambitious research goals with practical library design and implementation. Based in London, he is notable for bringing rigorous academic standards to open-source formal verification, including implementing complex numbers as a field and key algebraic structures that underpin much of mathlib’s functionality.
8 years of coding experience
Stackoverflow
434reputation
3kreached
11answers
0questions
Github Skills (19)
structures10
struct10
formal-methods10
algebra10
proofs10
proof10
slim10
theorem-proving10
g10
t410
leanback10
cgroups10
math9
mathematics9
syntax6
Programming languages (9)
Github contributions (5)
leanprover-community/mathlib4
May 2021 - Jan 2023
The math library of Lean 4
Role in this project:
Back-end Developer
Back-end DeveloperContributions:822 reviews, 67 commits, 208 PRs in 1 year 8 months
Contributions summary:Kevin has been making foundational changes to the math library of Lean 4. The commits include the initial setup of the algebra hierarchy, porting and adding definitions for algebraic structures like semigroups, monoids, and groups, and also the inclusion of operations like `DivInvMonoid` and `SubNegMonoid`. They have also worked on including `Mem` notation for lists, as well as adding the `by_contra'` and `triv` tactics.
maththeorem-provingcomputer-algebra-systemmathematicsin-progress
leanprover-community/mathlib3
Dec 2017 - Jan 2023
Lean 3's obsolete mathematical components library: please use mathlib4
Role in this project:Back-end Developer
Back-end DeveloperContributions:494 reviews, 430 commits, 219 PRs in 5 years 2 months
Contributions summary:Kevin contributed to the obsolete `mathlib3` library, focusing on fixing and extending existing code. Contributions involved making an `encodable` decidable equality instance, implementing complex numbers as a field, and removing unused code. They also worked on features involving group theory, adding algebraic structures such as add_subgroup and add_submonoid and related theorems.
maththeorem-provingcomponents-librarymathematicsjavascript
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