EPSSetLeftInitialSpace#

Specify a basis of vectors that constitute the left initial space, used by two-sided solvers to start the left subspace.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSSetLeftInitialSpace(EPS eps,PetscInt n,Vec isl[])

Collective

Input Parameters#

  • eps - the linear eigensolver context

  • n - number of vectors

  • isl - set of basis vectors of the left initial space

Notes#

Left initial vectors are used to initiate the left search space in two-sided eigensolvers. Users should pass here an approximation of the left eigenspace, if available.

The same comments in EPSSetInitialSpace() are applicable here.

See Also#

EPS: Eigenvalue Problem Solver, EPSSetInitialSpace(), EPSSetTwoSided()

Level#

intermediate

Location#

src/eps/interface/epssetup.c

Examples#

src/eps/tutorials/ex41.c

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