<html dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" id="owaParaStyle"></style>
</head>
<body fpstyle="1" ocsi="0">
<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">
<div class="tw-ta-container tw-nfl" id="tw-target-text-container">
<pre class="tw-data-text tw-ta tw-text-small" data-placeholder="Übersetzung" id="tw-target-text" style="text-align:left" dir="ltr"><span tabindex="0" lang="en">Dear Sirs,
in the formulation of differential equations with cross product, in the 2D case with the {curl} -operator wrong results are generated. Correct results are generated with the {d} operator. In the case of 3D, the correct results are generated with {curl}. Why does {curl} not work in the 2D case?</span></pre>
<pre class="tw-ta tw-text-small" style="position:absolute;visibility:hidden" lang="en"><span></span></pre>
</div>
<pre class="tw-data-placeholder tw-ta tw-text-small" data-placeholder="" id="tw-target-rmn" style="text-align:left" dir="ltr"><span><br>best regards<br>Anton Panteleev<br></span></pre>
</div>
</body>
</html>