Henry, Granville C. and Robert J. Valenza.  "Whitehead's Early Philosophy of Mathematics."  Process Studies 22, no. 1 (Spring 1993).

Astract

This article examines Whitehead's philosophy of mathematics as revealed by his early works, especially "An Introduction to Mathematics" (1911), "Universal Algebra" (1898), and the first volume of "Principia Mathematica" (1910).  The authors argue that Whitehead was mainly an empiricist, perhaps tainted with Platonism, and indicate how his approaches to mathematical generality failed to anticipate the direction of twentieth century mathematics, although -- surprisingly -- his mature philosophy did.  [Abstract from The Philosopher's Index]