<h1>Results</h1>
<p>
-Still to be written.
+The program generates two kinds of output. The first are the output
+files <code>solution-adaptive-q1.gmv</code>,
+<code>solution-global-q1.gmv</code>, and
+<code>solution-global-q2.gmv</code>. We show the latter in a 3d view
+here:
</p>
+
+<p align="center">
+ <img src="step-7.data/solution-3d.jpg" alt="solution" width="75%">
+</p>
+
+
+<p>
+The second are the various kinds of tables. Some are shown in the
+output written to the screen while the program runs, which we first
+display:
+</p>
+
+<code>
+<pre>
+Solving with Q1 elements, adaptive refinement
+=============================================
+
+Cycle 0:
+ Number of active cells: 4
+ Number of degrees of freedom: 9
+Cycle 1:
+ Number of active cells: 13
+ Number of degrees of freedom: 22
+Cycle 2:
+ Number of active cells: 31
+ Number of degrees of freedom: 46
+Cycle 3:
+ Number of active cells: 64
+ Number of degrees of freedom: 87
+Cycle 4:
+ Number of active cells: 127
+ Number of degrees of freedom: 160
+Cycle 5:
+ Number of active cells: 244
+ Number of degrees of freedom: 297
+Cycle 6:
+ Number of active cells: 466
+ Number of degrees of freedom: 543
+
+cycle cells dofs L2 H1 Linfty
+0 4 9 1.198e+00 2.732e+00 1.383e+00
+1 13 22 8.795e-02 1.193e+00 1.816e-01
+2 31 46 8.147e-02 1.167e+00 1.654e-01
+3 64 87 7.702e-02 1.077e+00 1.310e-01
+4 127 160 4.643e-02 7.988e-01 6.745e-02
+5 244 297 2.470e-02 5.568e-01 3.668e-02
+6 466 543 1.622e-02 4.107e-01 2.966e-02
+
+
+n cells H1 L2
+0 4 2.732e+00 1.198e+00
+1 13 1.193e+00 8.795e-02
+2 31 1.167e+00 8.147e-02
+3 64 1.077e+00 7.702e-02
+4 127 7.988e-01 4.643e-02
+5 244 5.568e-01 2.470e-02
+6 466 4.107e-01 1.622e-02
+
+
+Solving with Q1 elements, global refinement
+===========================================
+
+Cycle 0:
+ Number of active cells: 4
+ Number of degrees of freedom: 9
+Cycle 1:
+ Number of active cells: 16
+ Number of degrees of freedom: 25
+Cycle 2:
+ Number of active cells: 64
+ Number of degrees of freedom: 81
+Cycle 3:
+ Number of active cells: 256
+ Number of degrees of freedom: 289
+Cycle 4:
+ Number of active cells: 1024
+ Number of degrees of freedom: 1089
+Cycle 5:
+ Number of active cells: 4096
+ Number of degrees of freedom: 4225
+Cycle 6:
+ Number of active cells: 16384
+ Number of degrees of freedom: 16641
+
+cycle cells dofs L2 H1 Linfty
+0 4 9 1.198e+00 2.732e+00 1.383e+00
+1 16 25 8.281e-02 1.190e+00 1.808e-01
+2 64 81 8.142e-02 1.129e+00 1.294e-01
+3 256 289 2.113e-02 5.828e-01 4.917e-02
+4 1024 1089 5.319e-03 2.934e-01 1.359e-02
+5 4096 4225 1.332e-03 1.469e-01 3.482e-03
+6 16384 16641 3.332e-04 7.350e-02 8.758e-04
+
+
+n cells H1 L2
+0 4 2.732e+00 - 1.198e+00 - -
+1 16 1.190e+00 1.20 8.281e-02 14.47 3.86
+2 64 1.129e+00 0.08 8.142e-02 1.02 0.02
+3 256 5.828e-01 0.95 2.113e-02 3.85 1.95
+4 1024 2.934e-01 0.99 5.319e-03 3.97 1.99
+5 4096 1.469e-01 1.00 1.332e-03 3.99 2.00
+6 16384 7.350e-02 1.00 3.332e-04 4.00 2.00
+
+
+Solving with Q2 elements, global refinement
+===========================================
+
+Cycle 0:
+ Number of active cells: 4
+ Number of degrees of freedom: 25
+Cycle 1:
+ Number of active cells: 16
+ Number of degrees of freedom: 81
+Cycle 2:
+ Number of active cells: 64
+ Number of degrees of freedom: 289
+Cycle 3:
+ Number of active cells: 256
+ Number of degrees of freedom: 1089
+Cycle 4:
+ Number of active cells: 1024
+ Number of degrees of freedom: 4225
+Cycle 5:
+ Number of active cells: 4096
+ Number of degrees of freedom: 16641
+Cycle 6:
+ Number of active cells: 16384
+ Number of degrees of freedom: 66049
+
+cycle cells dofs L2 H1 Linfty
+0 4 25 1.433e+00 2.445e+00 1.286e+00
+1 16 81 7.912e-02 1.168e+00 1.728e-01
+2 64 289 7.755e-03 2.511e-01 1.991e-02
+3 256 1089 9.969e-04 6.235e-02 2.764e-03
+4 1024 4225 1.265e-04 1.571e-02 3.527e-04
+5 4096 16641 1.587e-05 3.937e-03 4.343e-05
+6 16384 66049 1.986e-06 9.847e-04 5.402e-06
+
+
+n cells H1 L2
+0 4 2.445e+00 - 1.433e+00 - -
+1 16 1.168e+00 1.07 7.912e-02 18.11 4.18
+2 64 2.511e-01 2.22 7.755e-03 10.20 3.35
+3 256 6.235e-02 2.01 9.969e-04 7.78 2.96
+4 1024 1.571e-02 1.99 1.265e-04 7.88 2.98
+5 4096 3.937e-03 2.00 1.587e-05 7.97 2.99
+6 16384 9.847e-04 2.00 1.986e-06 7.99 3.00
+</pre>
+</code>
+
+
+<p>
+One can see the error reduction upon grid refinement, and for the
+cases where global refinement was performed, also the convergence
+rates can be seen. The convergence rates in the H<sup>1</sup> norm of
+1 and 2 for Q1 and Q2 elements, respectively, can clearly be seen, as
+are the rates of 2 and 3 in the L<sub>2</sub> norm.
+</p>
+
+
+<p>
+Finally, the program generated various LaTeX tables. We show here
+the convergence table of the Q2 element with global refinement, after
+converting the format to HTML:
+</p>
+
+
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="CENTER" COLSPAN=2><P>
+n cells</TD>
+<TD ALIGN="CENTER" COLSPAN=2><I>H</I><SUP>1</SUP>-error</TD>
+<TD ALIGN="CENTER" COLSPAN=3><I>L</I><SUP>2</SUP>-error</TD>
+</TR>
+<TR><TD ALIGN="CENTER">0</TD>
+<TD ALIGN="RIGHT">4</TD>
+<TD ALIGN="CENTER">2.445e+00</TD>
+<TD ALIGN="CENTER">-</TD>
+<TD ALIGN="CENTER">1.433e+00</TD>
+<TD ALIGN="CENTER">-</TD>
+<TD ALIGN="CENTER">-</TD>
+</TR>
+<TR><TD ALIGN="CENTER">1</TD>
+<TD ALIGN="RIGHT">16</TD>
+<TD ALIGN="CENTER">1.168e+00</TD>
+<TD ALIGN="CENTER">1.07</TD>
+<TD ALIGN="CENTER">7.912e-02</TD>
+<TD ALIGN="CENTER">18.11</TD>
+<TD ALIGN="CENTER">4.18</TD>
+</TR>
+<TR><TD ALIGN="CENTER">2</TD>
+<TD ALIGN="RIGHT">64</TD>
+<TD ALIGN="CENTER">2.511e-01</TD>
+<TD ALIGN="CENTER">2.22</TD>
+<TD ALIGN="CENTER">7.755e-03</TD>
+<TD ALIGN="CENTER">10.20</TD>
+<TD ALIGN="CENTER">3.35</TD>
+</TR>
+<TR><TD ALIGN="CENTER">3</TD>
+<TD ALIGN="RIGHT">256</TD>
+<TD ALIGN="CENTER">6.235e-02</TD>
+<TD ALIGN="CENTER">2.01</TD>
+<TD ALIGN="CENTER">9.969e-04</TD>
+<TD ALIGN="CENTER">7.78</TD>
+<TD ALIGN="CENTER">2.96</TD>
+</TR>
+<TR><TD ALIGN="CENTER">4</TD>
+<TD ALIGN="RIGHT">1024</TD>
+<TD ALIGN="CENTER">1.571e-02</TD>
+<TD ALIGN="CENTER">1.99</TD>
+<TD ALIGN="CENTER">1.265e-04</TD>
+<TD ALIGN="CENTER">7.88</TD>
+<TD ALIGN="CENTER">2.98</TD>
+</TR>
+<TR><TD ALIGN="CENTER">5</TD>
+<TD ALIGN="RIGHT">4096</TD>
+<TD ALIGN="CENTER">3.937e-03</TD>
+<TD ALIGN="CENTER">2.00</TD>
+<TD ALIGN="CENTER">1.587e-05</TD>
+<TD ALIGN="CENTER">7.97</TD>
+<TD ALIGN="CENTER">2.99</TD>
+</TR>
+<TR><TD ALIGN="CENTER">6</TD>
+<TD ALIGN="RIGHT">16384</TD>
+<TD ALIGN="CENTER">9.847e-04</TD>
+<TD ALIGN="CENTER">2.00</TD>
+<TD ALIGN="CENTER">1.986e-06</TD>
+<TD ALIGN="CENTER">7.99</TD>
+<TD ALIGN="CENTER">3.00</TD>
+</TR>
+</TABLE></DIV>
+<BR>