2023/02/21 by David Kurniadi Angdinata, Angdinata, David Kurniadi, Junyan Xu +1
Computer Science · Mathematics · #Cryptography and Residue Arithmetic #History and Theory of Mathematics #Algebraic Geometry and Number Theory
paper · pdf · doi:10.48550/arxiv.2302.10640
Elliptic curves are fundamental objects in number theory and algebraic geometry, whose points over a field form an abelian group under a geometric addition law. Any elliptic curve over a field admits a Weierstrass model, but prior formal proofs that the addition law is associative in this model involve either advanced algebraic geometry or tedious computation, especially in characteristic two. We formalise in the Lean theorem prover, the type of nonsingular points of a Weierstrass curve over a field of any characteristic and a purely algebraic proof that it forms an abelian group.