<a href="https://en.wikipedia.org/wiki/Mu%E1%B8%A5ammad_ibn_M%C5%ABs%C4%81_al-%E1%B8%B4w%C4%81rizm%C4%AB" class="extiw" title="en:Muḥammad ibn Mūsā al-Ḵwārizmī">en:Muḥammad ibn Mūsā al-Ḵwārizmī</a>. (He is on a <a href="https://en.wikipedia.org/wiki/Soviet_Union" class="extiw" title="en:Soviet Union">en:Soviet Union</a> <a href="https://en.wikipedia.org/wiki/commemorative_stamp" class="extiw" title="en:commemorative stamp">en:commemorative stamp</a>, issued <a href="https://en.wikipedia.org/wiki/September_6" class="extiw" title="en:September 6">en:September 6</a>, <a href="https://en.wikipedia.org/wiki/1983" class="extiw" title="en:1983">en:1983</a>. The stamp bears his name and says "1200 years", referring to the approximate anniversary of his birth)
The original uploader was <a href="https://en.wikipedia.org/wiki/User:Ruud_Koot" class="extiw" title="wikipedia:User:Ruud Koot">Ruud Koot</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>.
31 December 2006 (original upload date)
<p>Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikipedia.org">en.wikipedia</a></span> to Commons.
</p>
Source: <a rel="nofollow" class="external autonumber" href="http://www-cs-faculty.stanford.edu/~knuth/graphics.html">[1]</a> <a rel="nofollow" class="external autonumber" href="http://www-cs-faculty.stanford.edu/~knuth/alk1.jpeg">[2]</a>