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# PEP_DIVERGED_SYMMETRY_LOST

The selected solver uses a pseudo-Lanczos recurrence, which is numerically unstable, and a symmetry test revealed that instability had appeared so the solver could not continue.

## See Also

PEP: Polynomial Eigenvalue Problems, `PEPSolve()`, `PEPGetConvergedReason()`, `PEPConvergedReason`

## Level

intermediate

## Location

include/slepcpep.h

Index of all PEP routines Table of Contents for all manual pages Index of all manual pages