NEPProjectOperator

Computes the projection of the nonlinear operator.

Synopsis

#include "slepcnep.h" 
PetscErrorCode NEPProjectOperator(NEP nep,PetscInt j0,PetscInt j1)

Collective

Input Parameters

• nep - the nonlinear eigensolver context

• j0 - initial index

• j1 - final index

Notes

This is available for split operator only.

The nonlinear operator T(lambda) is projected onto span(V), where V is an orthonormal basis built internally by the solver. The projected operator is equal to sum_i V’A_iV*f_i(lambda), so this function computes all matrices Ei = V’A_iV, and stores them in the extra matrices inside DS. Only rows/columns in the range [j0,j1-1] are computed, the previous ones are assumed to be available already.

See Also

NEPSetSplitOperator()

Level

developer

Location

src/nep/interface/nepsolve.c

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