# Nonlinear Solvers (SNES)

The Scalable Nonlinear Equations Solvers (`SNES`) component provides an
easy-to-use interface to Newton-type, quasi-Newton, full approximation scheme (FAS) multigrid, and other methods for solving systems of
nonlinear equations. User guide chapter: [](ch_snes).

`SNES` internally employs `KSP` for the solution of its linear systems. `SNES` users can also set `KSP` options directly in application
codes by first extracting the `KSP` context from the `SNES` context via `SNESGetKSP()`
and then directly calling various `KSP` (and `PC`) routines,

<A HREF="../../src/snes/tutorials/index.html">Examples</A><BR>


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Directories
<p><a href="interface/index.html">interface</a><br>
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<a href="mf/index.html">mf</a><br>
<a href="tests/index.html">tests</a><br>
<a href="utils/index.html">utils</a><br>
<a href="tutorials/index.html">tutorials</a><br>