I would do a check using GAP's Grape package, which allows for checking isomorphisms (it uses nauty as the backend) While there is no ready function to call Grape from Sage, this should be easy to write using e.g. libgap.function_factory()
On Monday, October 24, 2016 at 6:55:42 PM UTC, Dima Pasechnik wrote: > > I am trying to run your script, but am getting > > IOError: did not find file > 'boolean_dimension_cayley_graph_classifications.sage' to load or attach > > and indeed, there is no file so named in your github repo. > > > On Monday, October 24, 2016 at 5:53:07 PM UTC, Paul Leopardi wrote: >> >> >> >> On 25 October 2016 12:12:44 AM AEDT, Dima Pasechnik <[email protected]> >> wrote: >> >I'd start by checking that the parameters of these strongly regular >> >graphs >> >are the same, i.e. comparing >> > >> >G2.is_strongly_regular(parameters=True) >> >G1.is_strongly_regular(parameters=True) >> > >> >it could be that you'd need to take the complement, or, even worse, a >> >graph >> >coming from the dual (in the S-ring, etc sense) >> >association scheme. >> > >> >In particular, I recall stumbling upon this while working on these >> >graphs, >> >and finding out that the formulae here: >> >http://moodle.tec.hkr.se/~chen/research/2-weight-codes/index.htm >> >are not always correct. >> >> Thanks, Dima. >> The strongly regular graph parameters are always the same. The graphs >> themselves are in some cases not isomorphic. In my next message I will post >> the relevant output from my code. >> -- >> Paul Leopardi https://sites.google.com/site/paulleopardi/ >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
