A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is
We present an efficient endomorphism for the Jacobian of a curve C of genus 2 (hyperelliptic) for divisors having a Non disjoint support. This extends the work of Costello and Lauter in  who calculated explicit formulae for divisor doubling and addition of divisors with disjoint support in J(C) using only base field operations. Explicit formulae is presented for this third case and a slightly different approach for divisor doubling.arXiv:1405.5755v1 fatcat:u5kujjmnqnhspeuo2ekulaelh4