EPS_get_spectrum

module opensg.utils.eigenvalue_solver

opensg.utils.eigenvalue_solver.EPS_get_spectrum(EPS: slepc4py.SLEPc.EPS, V: dolfinx.fem.FunctionSpace) → Tuple[List[complex], List[petsc4py.PETSc.Vec], List[petsc4py.PETSc.Vec]]

Retrieve eigenvalues and eigenfunctions from SLEPc EPS object.

Parameters:

• EPS (SLEPc.EPS) – The SLEPc solver

• V (FunctionSpace) – The function space

Returns:

tuple – Tuple consisting of: List of complex converted eigenvalues, lists of converted eigenvectors (real part) and (imaginary part)