|Occupation||Editor and mathematician|
|Parent(s)||Emily Clay and Francis Jourdain|
He was born in Ashbourne in Derbyshire one of a large family belonging to Emily Clay and his father Francis Jourdain (who was the vicar at Ashbourne). He was partly disabled by Friedreich's ataxia. He corresponded with Georg Cantor and Gottlob Frege, and took a close interest in the paradoxes related to Russell's paradox, formulating the card paradox version of the liar paradox. He corresponded with Ludwig Wittgenstein, meeting with him in Cambridge to discuss Frege's book Grundgesetze der Arithmetik, of parts of which Jourdain had prepared a translation. He also worked on algebraic logic, and the history of science with Isaac Newton as a particular study. He was London editor for The Monist.
His sister Eleanor Jourdain was an English academic and author.
- O'Connor, John J.; Robertson, Edmund F., "Philip Jourdain", MacTutor History of Mathematics archive, University of St Andrews.
- Works by Philip Jourdain at Project Gutenberg
- Works by or about Philip Jourdain at Internet Archive
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