Muhammad al-Khowarizmi A postage stamp issued by the USSR in 1983 to commemorate the 1200th anniversary of Muhammad ibn Musa al-Khowarizmi, after whom algorithms are named. Scanned at 300dpi by Donald Knuth, one of the legends of computer science.
Algebra is a corruption of part of the title of his great work "Hisab al-jabr w'al muqabalah". The title means something like "the science of reunion and reduction".