[petsc-users] Is there a way to do the Tikhonov regularization using PETSc

[Jed Brown]

Brian Yang <brianyang1106 at gmail.com> writes:

> Thanks for the quick reply.
>
> In the main diagonal of Matrix A, it may have some very small values, I
> want to add factor to stabilize it, like:
>
> A + alpha * I

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatShift.html
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