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Function File: A = bim1a_laplacian (mesh,epsilon,kappa)

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

The equation taken into account is:

- (epsilon * kappa ( u’ ))’ = f

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

See also: bim1a_rhs, bim1a_reaction, bim1a_advection_diffusion, bim2a_laplacian, bim3a_laplacian.

Package: bim