Philip Ehrlich is Professor at Department of Philosophy of Ohio University. His main areas of interest are Logic, History of Mathematics, and Philosophy of Science.
Ehrlich, P.: The absolute arithmetic continuum and the unification of all numbers great and small. The Bulletin of Symbolic Logic 18 (2012), no. 1, 1—45. here
Ehrlich, Philip (2006), "The rise of non-Archimedean mathematics and the roots of a misconception. I. The emergence of non-Archimedean systems of magnitudes", Archive for History of Exact Sciences, 60 (1): 1–121, MR 2206281, doi:10.1007/s00407-005-0102-4 .
Ehrlich, Philip: Number systems with simplicity hierarchies: a generalization of Conway's theory of surreal numbers. J. Symbolic Logic 66 (2001), no. 3, 1231–1258.
Real numbers, generalizations of the reals, and theories of continua. Edited by Philip Ehrlich. Synthese Library, 242. Kluwer Academic Publishers Group, Dordrecht, 1994.
