[sage-support] Re: Reconstructing a symbolic expression with derivative from the string representation

2017-02-22 Thread Nils Bruin
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

[sage-support] Re: Reconstructing a symbolic expression with derivative from the string representation

2017-02-22 Thread Ralf Stephan
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.