MagmaNeighbours Archived

MagmaNeighbours GitLab repository

An alpha version of our internal magma code fragments is available on GitLab

The following algorithms are currently available:

• TwoNeighbours: computes the genus of a lattice. (Gilles)
• SearchExtremalLattice: searches for an extremal lattice in a genus, discards all other lattices. (Gilles)
• RationalMass: computes the exact Maß of a lattice. (Ivica)
• RootSystemPos: checks whether a given lattice is reflective or not. (Ivica)

Download

git pull https://gitlab.com/Symplectos/MagmaNeighbours.git

Load

To load the algorithms into MAGMA, simply load the .spec file with the AttachSpec function.

Install / Autoload

To load the spec file at startup, do the following:

• bash: add the following line to your .bashrc file (in your home directory) export MAGMA_USER_SPEC="$HOME/path/Neighbours.spec"

• csh and tcsh: add the following line to your .cshrc file (in your home directory) setenv MAGMA_USER_SPEC "$HOME/path/Neighbours.spec"