DiscreteOperators_build_gradient

dolfin.cpp.fem.DiscreteOperators_build_gradient(V0, V1)

Build the discrete gradient operator A that takes a w in H^1 (P1, nodal Lagrange) to v in H(curl) (lowest order Nedelec), i.e. v = Aw. V0 is the H(curl) space, and V1 is the P1 Lagrange space.