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Function File: A = bim3a_osc_laplacian (mesh, epsilon)

Build the osc finite element stiffness matrix for a diffusion problem.

For details on the Orthogonal Subdomain Collocation (OSC) method see: M.Putti and C.Cordes, SIAM J.SCI.COMPUT. Vol.19(4), pp.1154-1168, 1998.

The equation taken into account is:

- div (epsilon grad (u)) = f

where epsilon is an element-wise constant scalar function.

See also: bim3a_rhs, bim3a_reaction, bim2a_laplacian, bim3a_laplacian.

Package: bim