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Hi everybody! When I was trying to compile the following code, a very strange mistake occured (in some cases there was nothing to be shown and in other cases - the code began evaluating and then unexpectedly stopped). In what way might that code...

Yes, I know there was a warning about boundary conditions. But just before I compiled this code, I drew a graph of v1(x,y,z,t) in particular point (x,y) and everything was OK. Such a warning I received also in this case, but nevertheless the graph...