MatSetTransposeNullSpace#

attaches the null space of a transpose of a matrix to the matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatSetTransposeNullSpace(Mat mat, MatNullSpace nullsp)

Logically Collective

Input Parameters#

mat - the matrix
nullsp - the null space object

Notes#

This allows solving singular linear systems defined by the transpose of the matrix using KSP solvers with left preconditioning.

See MatSetNullSpace()

See Also#

Matrices, Mat, MatNullSpace, MatCreate(), MatNullSpaceCreate(), MatSetNearNullSpace(), MatGetNullSpace(), MatSetNullSpace(), MatGetTransposeNullSpace(), MatNullSpaceRemove(), KSPSetPCSide()

Level#

advanced

Location#

src/mat/interface/matrix.c

Examples#

src/ksp/ksp/tutorials/ex67.c

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