Spring 2024 courses:

Math 139, Quantitative Reasoning. Sections 12 (TuTh 12:30pm-1:45pm Heide 102) and 21/W (online.)

Math 143, Finite Mathematics for Business and Social Sciences. Section 6 (MoWe 12:30pm-1:45pm Hyer 216.)

Math 375, History of Mathematics (MoWe 11:00am-12:15pm Heide 117.)

My office is Laurentide 2215, my Spring 2024 student office hours are Mondays and Wednesdays 9:45am-10:45am, Tuesdays and Thursdays 11:15am-12:15pm, 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, between 20 and 24 countries (depending on how you count the Falklands [Argentina/UK], Antarctica, and Aruba [separate from the Netherlands or not] - 21 is probably the right number (counting the US), and 39 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


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 and Video from UW Space Place