Spring 2022 courses:

Math 139 QR, Sections 20/W (Online), 2 (MoWe 9:30-10:45) in Heide 102, and 8 (TuTh 11:00-12:15) in Heide 112, and Math 375 Development of Mathematics, Section 1 (MoWe 11:00-12:15) in Heide 117.

My office is Laurentide 2215, my Spring 2022 student office hours are Mondays and Wednesdays from 12:30pm to 1:30pm, Tuesdays and Thursdays from 9:45am to 10:45am, and by appointment. They may still be via webex. Yes, my office has both Packers and Broncos stuff in it. Here's why. I've also traveled to 5 continents, 16 countries (or maybe 15 or 17 depending on your interpretations of Falkland sovereignty and the Antarctic Treaty), and 38 US states (plus a district and a territory), as well as some land that's not part of any country.

Current research:

Boolean Algebras

Infinite Graph Theory

Set Theory



My Mathematical Genealogy

Slides from talks:

November 17, 2012. BAs & Hypergraphs

September 20, 2017. Measuring Starlight Deflection during the 2017 Eclipse.

April 6 and 10, 2018, updated version of above at MAA-Wisconsin Section meeting. Slides and Video from UW Space Place