On 4/14/19 11:59 PM, Robert Spartus wrote: > > Thanks for the insightful discussion on the integrating issue. Wolfgang, I > guess your last argument is the same as you gave in one of your fantastic > lectures?
Yes. (Also, thanks for the compliment :-) ) > Incidentally, do you have any ideas on how to solve the singularity of the > mass matrix in this vector-valued problem? It is hard to imagine situations in which the mass matrix would be singular. It is a positive definite form that gives rise to the mass matrix and so it really shouldn't be singular at all. Can you show the code again with which you build it? The only situation where the mass matrix may become singular is if you have a degenerate mesh with elements of zero or negative volume. Best WB -- ------------------------------------------------------------------------ Wolfgang Bangerth email: [email protected] www: http://www.math.colostate.edu/~bangerth/ -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
