A.N. Whitehead

Alfred North Whitehead (1861–1947), Cambridge-educated mathematician and philosopher. From 1884 to 1910 he was a Fellow of Trinity College, Cambridge, and lecturer in mathematics there; from 1911 to 1924 he taught in London, first at University College and then at the Imperial College of Science and Technology; in 1924 he took up a professorship in philosophy at Harvard and spent the rest of his life in America. BR took mathematics courses with him as an undergraduate, which led to a lifelong friendship. Whitehead’s first major work was A Treatise on Universal Algebra (1898), which treated selected mathematical theories as “systems of symbolic reasoning”. Like BR’s The Principles of Mathematics (1903), it was intended as the first of two volumes; but in 1900 he and BR discovered Giuseppe Peano’s work in symbolic logic, and each decided to set aside his projected second volume to work together on a more comprehensive treatment of mathematics using Peano’s methods. The result was the three volumes of Principia Mathematica (1910–13), which occupied the pair for over a decade. After Principia was published, Whitehead’s interests, like BR’s, turned to the empirical sciences and, finally, after his move to America, to pure metaphysics. See Victor Lowe, Alfred North Whitehead: the Man and His Work, 2 vols. (Baltimore and London: Johns Hopkins U. P., 1985–90).