# Libraries

These repositories provide the common numerical substrate for the rest
of the project: finite-element infrastructure, scalable sparse linear
algebra, and direct solvers.

<div class="repo-grid">
  <a class="repo-card" href="dealii.html">
    <span class="repo-card__kicker">Core FE</span>
    <strong>deal.II</strong>
    <span>Adaptive finite elements, matrix-free kernels, distributed meshes</span>
  </a>
  <a class="repo-card" href="psctoolkit.html">
    <span class="repo-card__kicker">Iterative Solvers</span>
    <strong>PSCToolkit</strong>
    <span>PSBLAS, AMG4PSBLAS, scalable sparse linear algebra</span>
  </a>
  <a class="repo-card" href="mumps.html">
    <span class="repo-card__kicker">Direct Solver</span>
    <strong>MUMPS</strong>
    <span>Massively parallel multifrontal sparse solves</span>
  </a>
</div>

```{toctree}
:hidden:
:maxdepth: 1

dealii
psctoolkit
mumps
```