The SymPy–Sage interface needs some work in general; many special functions in SymPy don't have `_sage_` methods, and thus can't be converted back to Sage. Maybe Sage should use its conversions table like it does for Maxima.
The patch http://trac.sagemath.org/ticket/15057 adds conversions for Sage to SymPy, and should be an easy review. On Friday, 16 August 2013 13:54:07 UTC-7, François wrote: > > Hi Roland, > > Not inappropriate, but the request is better made on the sage-devel > mailing list. I may try to shepherd it personally but I am not the only > person that can do it. I think there may even be a ticket for it. > > François > > On 17/08/2013, at 4:34, "Roland van den Brink" > <roland.va...@gmail.com<javascript:>> > wrote: > > Dear Sir, > > Browsing the web I came across your good work related with SymPy and > Sage. > The latest SymPy version available in Sage is 0.7.1.p0. > > Are there plans to update it? > > The reason asking is that I noticed that on a GSoC > project<https://google-melange.appspot.com/gsoc/homepage/google/gsoc2013>a > student is working on a Diophantine equation > module<https://github.com/sympy/sympy/blob/master/sympy/solvers/diophantine.py>, > > and it would be handy to have a stable environment to use it. > > P.S.: If this message is perceived as inappropriate, please accept my > sincere apologies for the unsolicited sending of this question. > > Yours faithfully, > > Roland van den Brink > +31 623 744 522 > > > This email may be confidential and subject to legal privilege, it may > not reflect the views of the University of Canterbury, and it is not > guaranteed to be virus free. If you are not an intended recipient, > please notify the sender immediately and erase all copies of the message > and any attachments. > > Please refer to http://www.canterbury.ac.nz/emaildisclaimer for more > information. > > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
