New Entry by Kathrin Glüer and Åsa Wikforss on June 17, 2009.] There is a long tradition of thinking of language as conventional in its nature, dating back at least to Aristotle (De Interpretatione). By appealing to the role of

Revised entry by Bernard Linsky on June 19, 2009. Changes to: Main text, Bibliography] Principia Mathematica by A.N. Whitehead and Bertrand Russell, published 1910-1913 in three volumes by Cambridge University Press, contains a derivation of large portions of mathematics using