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C++ API

Function File: A = bim2a_laplacian (mesh,epsilon,kappa)

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

The equation taken into account is:

- div (epsilon * kappa grad (u)) = f

where epsilon is an element-wise constant scalar function, while kappa is a piecewise linear conforming scalar function.

See also: bim2a_rhs, bim2a_reaction, bim2a_advection_diffusion, bim1a_laplacian, bim3a_laplacian.

Package: bim