On Oct 31, 3:06 am, Carlo Hamalainen <[email protected]>
wrote:
> I've used Nauty on Linux for a few years with no problems. It's a bit
> of a shame that the license isn't BSD/GPL because it's a great
> package.

Robert Miller has implemented the functionality of nauty as his NICE
package, within Sage (thus with a GPL license ).

A place to start is

sage/groups/perm_gps/partn_ref/automorphism_group_canonical_label.pyx

and this also gives ride to a canonical labeling routine for graphs,
which could easily be extended to apply to designs.

Rob
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