On Wednesday, February 22, 2017 at 10:49:11 PM UTC-8, Ralf Stephan wrote:
>
> Yes, there is no symbolic diff function and so it does not appear
> in the dictionary for translating strings to expressions. It has other
> consequences too so I consider writing a dummy function like
> Function_sum a
On Wednesday, February 22, 2017 at 7:11:50 PM UTC+1, Nils Bruin wrote:
>
> Clearly, SR('diff(...)') operates in a scope where "diff" isn't bound to
> the toplevel "diff".
>
Yes, there is no symbolic diff function and so it does not appear
in the dictionary for translating strings to expressions.