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<p><b>Wolfgang Haken</b> (; June 21, 1928 - October 2, 2022) was a <a href="page.php?w=German_Americans">German American</a> <a href="page.php?w=mathematician">mathematician</a> who specialized in <a href="page.php?w=topology">topology</a>, in particular <a href="page.php?w=3-manifold">3-manifold</a>s.</p>

<p><big>Biography</big></p>
<p>Haken was born on June 21, 1928, in <a href="page.php?w=Berlin">Berlin</a>, Germany. His father was Werner Haken, a physicist who had <a href="page.php?w=Max_Planck">Max Planck</a> as a doctoral thesis advisor. In 1953,</p><p>
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