On Mar 12, 3:17 pm, Jason Grout <jason-s...@creativetrax.com> wrote:
> So the Mathematica *input* syntax is closer to the sage *input* syntax,
> while the mathematica full form (i.e., the internal tree of operations)
> is closer to the sage tree of operations.  That makes a lot of sense.
> For software<->software translation, in the long run, it will probably
> make more sense to hook up the two operation trees, rather than deal
> with the sometimes vague output printing of one going into the input
> printing of the other.
>
> So we just need to hook the mathematica into a lower level of Sage (at
> the pynac level) where the expressions are more consistent.
I know very little about pynac, but isn't it designed specifically for
symbolic expressions?  How would you handle mathematica output that
isn't a symbolic expression?  Should we try to detect the type of
output and route it to pynac or whatever sage module is appropriate?
I don't think that I have enough knowledge about sage to do this - I'd
be much more comfortable writing a patch that just converts the repr()
and lets sage_eval (with an automatically generated locals dictionary)
sort it all out.  But if you'd like to write a patch working at a
lower level that converts both symbolic and numerical mathematica
results into pynac/numpy/whatever's appropriate, then I'll defer to
you!

Cheers,
Felix

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