Hello! I’m trying to solve a generalized eigenvalue problem by specifying complex values of shift for the shift-invert algorithm. My matrices A and B are real. Does any version of dolfin (not dolfinx) currently support complex shifts to the SLEPcEigensolver object? I see that complex support is po…

Thanks, I did see that but that talks more about splitting the problem into real and imaginary parts. My question is more about applying a complex shift to real matrices A and B in the eigenvalue problem. The SLEPcEigensolver object is just a wrapper around the PETSc EPS object which can support co…

As discussed in that thread, you’ll need dolfinx if you want complex number support in the software.

Complex support in dolfin

dparsons May 13, 2020, 9:54am 2

There is a bit of discussion on this question at Solving complex-valued PDE

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Complex support in dolfin

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