# 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

mmaij.c
mpiaij.h
mpiaijpc.c
mpihashmat.h
mpimatmatmatmult.c
mpimattransposematmult.c
mpiptap.c
fdmpiaij.c
mpb_aij.c
mpiaij.c
mpimatmatmult.c
mpiov.c

Directories

crl
ftn-custom
mkl_cpardiso
mpicusparse
mpiviennacl
mpiviennaclcuda
mumps
pastix
strumpack
superlu_dist
aijmkl
aijperm
aijsell
kokkos
mpihipsparse