Sorry if I spam :
I did this is it of any help as it works in sage-8.1
from sympy import *
from sympy.holonomic.holonomic import *
from sympy.holonomic import DifferentialOperators
from sympy.abc import x
from sympy import ZZ
R, D = DifferentialOperators(ZZ.old_poly_ring(x), 'D')
HolonomicFunction(D**2 + 1, x, 0, [0, 1])
HolonomicFunction((1) + (1)*D**2, x, 0, [0, 1])
Le 13/04/2018 à 00:06, Raymond Rogers a écrit :
The sympy documentation
http://docs.sympy.org/latest/modules/holonomic/convert.html
has the function from_meiljer and I do
from sympy import *
from sympy.holonomic.holonomic import from_hyper, from_meijer,
DifferentialOperators
(I think redundant)
I get: "ImportError: cannot import name from_meijer"
Is this a versioning error or what?
As a side issue: I am trying to go from generalized hypergeometric <->
meijerg
Is there a better way than through holomorphic?
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