I have been on the faculty at UH since I arrived as an assistant professor in 1991. Prior to that I had appointments at a variety of departments, including the Universities of Iowa and Minnesota and a postdoc at Hull University in a department that no longer exists! Since my time here I have also been a visiting scholar or visiting professor in several departments, most recently (2012) the University of Oslo.

Research Interests

My primary research interest is nonstandard analysis, as well as related areas of mathematical logic, especially model theory. Other interests include measure theory, probability, and statistics. I have also published in philosophy, computer science, and have been co-pi on an NSF grant in Biosystems Analysis and Control, working in ethology (a subfield of zoology).

I am the editor-in-chief of the Journal of Logic and Analysis

Selected Publications:


Selected Mathematics Papers: