Hi Juan,
> I'm trying to use subs method in PolynomialSequence, but when I doing that
> I get the same PolynomialSequence. For example in code below my polynomial
> sequence PS has only one polynomial (P) ... I'm trying to use subs but I
> get the same polynomial. Where is wrong?
The thing is that PS.subs(...) does *not* modify PS. It only returns a
new polynomial sequence with the substitution done. You should have
done at the end
PS_sub = PS.subs({R.gens()[0]:1,R.gens()[1]:1})
print PS_sub
Vincent
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