The big one. You'll need lapack from the repository for them to work properly, and also gnuplot for graphics.
arpack - http://people.salixos.org/lmello/pkg/l/arpack/
glpk - http://people.salixos.org/lmello/pkg/l/glpk/
hdf5 - http://people.salixos.org/lmello/pkg/l/hdf5/
qhull - http://people.salixos.org/lmello/pkg/l/qhull/
qrupdate - http://people.salixos.org/lmello/pkg/l/qrupdate/
qrupdate (64-bit) - http://people.salixos.org/lmello/pkg/l/qrupdate-x86_64/
suitesparse - http://people.salixos.org/lmello/pkg/l/suitesparse/
suitesparse (64-bit) - http://people.salixos.org/lmello/pkg/l/ ... se-x86_64/
octave - http://people.salixos.org/lmello/pkg/ap/octave/