Drawing of the famous Norwegian mathematician Niels Henrik Abel, with his signature
<bdi><a href="https://en.wikipedia.org/wiki/en:Johan_G%C3%B8rbitz" class="extiw" title="w:en:Johan Gørbitz"><span title="painter (1782-1853)">Johan Gørbitz</span></a>
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English Wikipedia (<a href="https://en.wikipedia.org/wiki/Image:Niels_Henrik_Abel2.jpg" class="extiw" title="en:Image:Niels Henrik Abel2.jpg">en:Image:Niels Henrik Abel2.jpg</a>