Hippias
Links
Hippias
http://www.utm.edu/research/iep/h/hippias.htm
Brief article on this early Sophist, from the Internet Encyclopedia of Philosophy.
Hippias
http://www.wikipedia.org/wiki/Hippias
Wikipedia entry on this ancient polymath, including some material from the 1911 Britannica.
Hippias of Elis
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Hippias.html
Concise scholarly biography of this discoverer of the quadratrix, from the MacTutor History of Mathematics.
Hippias's Quadratrix
http://www.perseus.tufts.edu/GreekScience/Students/Tim/Quadratrix.html
Some brief notes on Hippias' attempt to square the circle using this curve, "a pictorial representation of the irrationality of pi."