Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-02 Thread Wolfgang Bangerth
On 12/2/20 9:30 PM, Reza Rastak wrote: I am trying to calculate the condition number of a Trilinos Block Sparse matrix. Is there an example of that in the documentation that you can point me to? No, and that's actually a quite difficult task because you have to estimate eigenvalues. The easi

Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-02 Thread Reza Rastak
Dear Wolfgang, I am trying to calculate the condition number of a Trilinos Block Sparse matrix. Is there an example of that in the documentation that you can point me to? Thank you, Reza On Sunday, January 31, 2016 at 5:23:31 PM UTC-8 Wolfgang Bangerth wrote: > On 01/31/2016 12:18 PM, Mohamm

Re: [deal.II] Boundary conditions on components in with FESystem

2020-12-02 Thread Konrad Simon
Dear Wolfgang, I may have stumbled over something. I created a 3D hyper_shell with 6 coarse cells which is nothing but a cube with a cubical void in the center. I then asked for the face orientations of each face in each cell. In each of the 6 cells all faces have standard orientation according