es"><i class="fa fa-check"></i><b>3.1</b> Cartesian coordinates</a></li>
<li class="chapter" data-level="3.2" data-path="coordinate-systems-axes.html"><a href="coordinate-systems-axes.html#nonlinear-axes"><i class="fa fa-check"></i><b>3.2</b> Nonlinear axes</a></li>
<li class="chapter" data-level="3.3" data-path="coordinate-systems-axes.html"><a href="coordinate-systems-axes.html#coordinate-systems-with-curved-axes"><i class="fa fa-check"></i><b>3.3</b> Coordinate systems with curved axes</a></li>
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