How do I implement the Levi-Civita and Kroenecker tensors in sympy? I am
doing
from sympy.tensor.tensor import TensorIndexType, tensor_indices
from sympy.tensor.tensor import tensorhead, TensorManager
from sympy.tensor.tensor import get_symmetric_group_sgs
from sympy import LeviCivita
Lorentz = TensorIndexType('Lorentz',
dim=3,
eps_dim=3,
metric=False,
dummy_fmt='L')
Lorentz.data = [1,1,1]
Lorentz.epsilon.data = [[[LeviCivita(i,j,k) for k in range(3)]
for j in range(3)]
for i in range(3)]
i,j,k,l,m, n = tensor_indices('i,j,k,l,m,n', Lorentz)
eps = Lorentz.epsilon
delta = Lorentz.delta
Is this correct?
--
You received this message because you are subscribed to the Google Groups
"sympy" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sympy.
To view this discussion on the web visit
https://groups.google.com/d/msgid/sympy/1b94f705-e1ea-4b4b-9fa1-1a0a3422901d%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
