e

</code></pre>
<p>The method is implemented in <code>PoissonRT1</code> subroutine and tested in <code>squarePoissonRT1</code>. Together with other elements (RT0, BDM1), <code>mfemPoisson</code> provides a concise interface to solve Poisson equation in mixed formulation. The RT0-P0 element is tested in <code>PoissonRT1mfemrate</code>. This doc is based on <code>PoissonRT1mfemrate</code>.</p>

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