dolfin team mailing list archive

[alex <alessandro.mirone@xxxxxxxxxx>]

Hello,
 I am doing my first steps using dolfin and
I have a question concerning example src/demo/fem :

the assembled MassMatrix differs from the reference one.
I have traced this difference to the middlepoint quadrature
for tetrahedron, that is inaccurate to integrate properly
quadratic functions.

I am new also to fem, so I am wondering what should I do :
 should I live with that or try to implement another quadrature
for the tetrahedron?

Thank you in advance for the time you will be able to spend
to answer such newby's questions.
Regards
             Alex