Dear getfem developers and users,
is it possible to assemble a mass matrix where Trial and Test Functions
are defined on different meshes?
For instance the Test Function is defined on a fine, the Trial Function
on a coarse mesh \Omega_H, which may be a subset of the fine one
\Omega_h. Integration is performed over the fine mesh: \int_{\Omega_h}
\partial\phi \partial\psi* where \partial\psi* is the restriction of
\psi defined on \Omega_H to \Omega_h.
I know that with asm_mass_matrix it is possible to define two different
functions mf_u1 and mf_u2 to integrate, but what if they are defined on
different meshes?
Klaus
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