# 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 [](../MatOrderings/index).
Examples
baijmkl/
baijov.c
mmbaij.c
mpb_baij.c
mpiaijbaij.c
mpibaij.c
mpibaij.h
makefile