John Venn / Georg Cantor / Ludwig Wittgenstein / Ernst Schröder / Charles Saunders Peirce / Hugh MacColl / Edmund Husserl / George Boole / Raul Corazzon / Frank Plumpton Ramsey / Giuseppe Peano / Bertrand Russell / Francis Herbert Bradley / Jacques Herbrand / Lewis Carroll / Kurt Gödel / Jan Lukasiewicz / Ernst Zermelo / William Stanley Jevons / /