a library for computing isogenies between abelian varieties
AVIsogenies (Abelian Varieties and Isogenies) is a Magma package for working with abelian varieties, with a particular emphasis on explicit isogeny computation; it is released under the LGPLv2+.
Its prominent feature is the computation of (l,l)-isogenies between Jacobian varieties of genus-two hyperelliptic curves over finite fields of characteristic coprime to l; practical runs have used values of l in the hundreds.
The latest release is
see the licensing informations in the file
More data (such as past releases) may be found on our INRIA GForge project page.
This package is still young, and gratefully accepts bug fixes and feature patches; the preferred way of communication is via our development mailing list.
See the file
00.AUTHORS (in the release tarball)
for the full list of contributors to AVIsogenies.
The project administrators are
Romain Cosset, and
if necessary, they can be contacted via the email address