Some of Jonathan Poritz's Past Affiliations

• In the summer and fall of 2006, I was a Lecturer in the Department of Mathematics of the University of Colorado at Colorado Springs, where I taught statistics in the summer and Math 112-003: Calculus for Business and Economics (with its associated HW page) in the fall.
• During the Wintersemesters of both 2002/3 and 2003/4 I taught a course Introduction to Quantum Computation for the Computer Science Department of the Swiss Federal Institute of Technology (the Eidgenössische Technische Hochschule) in Zürich. (At the request of some former students, I will keep the old web page for that course on-line, but no guarantees are made that all the links thereon remain alive.)
• From 2000-2005, I did research on network security, cryptography, identity management and privacy at the IBM Zurich Research Laboratory.
• Before that, I was a visiting professor of mathematics at several universities (the last was Georgetown University in Washington, DC, USA), researching differential geometry, mathematical visualization, global analysis, and mathematical gauge theory (everyone loves the Hermitian-Yang-Mills equations!).