Hi All, It was just pointed out on the Octave-Forge list that ARPACK seems to have been released under a standard BSD license [1]. Doesn't this mean that we can move the code from the 'arpack' package into core Octave, which would give us the 'eigs' and 'svds' functions? Søren [1] http://www.caam.rice.edu/software/ARPACK/RiceBSD.txt