Am 03.02.2012 14:11, schrieb Jed Brown: > On Fri, Feb 3, 2012 at 16:03, Thomas Witkowski > <thomas.witkowski at tu-dresden.de > <mailto:thomas.witkowski at tu-dresden.de>> wrote: > > The system writes > > L 0 M > M L 0 > L M L > > With L = discrete laplace, M = mass matrix, 0 = empty matrix > > > Hmm, what are the relative scales of these equations? > Just for the test I remove all scalings (so no timestep-sizes or other constants are multiplied). L and M are the standard matrices discretized with linear FEMs on a 2D box (no local mesh adaptivity).
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