Wilgenhof 1979-1986
Ph.D Toegepaste Wiskunde, Stellenbosch 1986
Ph.D Computer Science, University of Colorado (Boulder) 2005

I live at 9500 feet in the Rocky Mountains near Evergreen, Colorado. I am president of Principia Mathematica in Denver, Colorado, USA. I am also an adjunct professor in the Computer Science department at the University of Colorado at Boulder. I am married to Kathy Houston.

A brief history of time:
I left Die Plek in July 1986 and came to the US as a visiting professor at Rensselaer Polytechnic Institute (RPI) in Troy, New York. The next year I went to West Virginia University in Morgantown, West Virginia where I was an assistant professor in the department of Mathematics for two years. In 1989 moved to Evergreen, Colorado and started a career as a consulting engineer with Principia Mathematica, a company specializing in Computational Fluid Dynamics, and I've done that ever since. I've lived in a cabin up in the mountains since 1989. I got married in 1997 and have no children to speak of.