# Matrix Operations (Mat) PETSc matrices (`Mat` objects) are used to store Jacobians and other sparse matrices in PDE-based (or other) simulations. Users guide chapter: [](ch_matrices). See also [](../MatGraphOperations/index). Examples

Source files

mpiaijbaij.c
mpibaij.h
mmbaij.c
baijov.c
mpb_baij.c
mpibaij.c

Directories

baijmkl
ftn-custom