# SystemAssembler¶

class dolfin.fem.assembling.SystemAssembler(A_form, b_form, bcs=None, form_compiler_parameters=None)

This class provides an assembler for systems of the form Ax = b. It differs from the default DOLFIN assembler in that it applies boundary conditions at the time of assembly, which preserves any symmetries in A.

Create a SystemAssembler

• Arguments *
a (ufl.Form, _Form_)

Bilinear form

L (ufl.Form, _Form_)

Linear form

bcs (_DirichletBC_)

A list or a single DirichletBC (optional)