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# Copyright (c) 2005-2006 Anders Logg (logg@tti-c.org)
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# Licensed under the GNU GPL Version 2
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# First added: 2005-06-05
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# Last changed: 2006-03-28
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# The bilinear form for a stiffness matrix (Poisson).
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element = FiniteElement("Lagrange", "triangle", 1)
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v = TestFunction(element)
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U = TrialFunction(element)
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a = c*dot(grad(v), grad(U))*dx