# 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
color.c
color.h
degr.c
dsm.c
ido.c
numsrt.c
seq.c
setr.c
slo.c
makefile