diff --git a/sumpy/expansion/pde_utils.py b/sumpy/expansion/pde_utils.py index bd856a622fd281006e2a5eeda5c2c42ddb1a883f..23152e9a24880730dd42f87900c30770e87c5692 100644 --- a/sumpy/expansion/pde_utils.py +++ b/sumpy/expansion/pde_utils.py @@ -96,7 +96,7 @@ class PDE(object): def laplacian(pde): eqs = [] for j in range(len(pde.eqs)): - eqs.append(div(grad(pde[j])).eqs[0]) + eqs.append(div(grad(pde[j]))) return PDE(pde.dim, *eqs) @@ -118,7 +118,7 @@ def grad(pde): for d in range(pde.dim): mi = [0]*pde.dim mi[d] += 1 - eqs.append(diff(pde, mi).eqs[0]) + eqs.append(diff(pde, mi)) return PDE(pde.dim, *eqs)