# 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

fnroot.c
gen1wd.c
gennd.c
genqmd.c
genrcm.c
qmdmrg.c
qmdqt.c
qmdrch.c
qmdupd.c
rcm.c
rootls.c
sorder.c
sp1wd.c
spnd.c
spqmd.c
sprcm.c
sregis.c
wbm.c
degree.c
fn1wd.c
fndsep.c
spectral.c

Directories

amd
metisnd