Z3r0's profile - activity

thank you.

Do you have any idea from where I can start? I want a linear map "d" that gives d(xy) = d(x)y+xd(y).where x,y in PathAlgebra.

Thanks, I want to create derivations on path algebras.

I tried to define a symbolic function on path algbera like that:

G = DiGraph({1:{2:['a']}, 2:{3:['b']}})
P = G.path_semigroup()
A = P.algebra(GF(7))
A.inject_variables()

def ev(self, x): return 2*x
foo = function("foo", nargs=1, eval_func=ev)
foo(a)

But I get an error: TypeError: cannot coerce arguments: no canonical coercion from Path algebra of Multi-digraph on 3 vertices over Finite Field of size 7 to Symbolic Ring. My question how can I define a symbolic function to accept path algebra variables?

Thanks.