Spring 2020 courses:Math 139: Quantitative Reasoning, section 7/7P (12:30pm-1:45pm TuTh in Heide Hall 102) and the online section 10/10W. Math 151: Trigonometry, section 1 (11:00am-12:15pm TuTh in Heide Hall 219). Math 280: Discrete Math, section 1 (11:00am-12:15pm MoWe in Uphame Hall 144) My office is Laurentide 2241, my Spring 2020 student office hours are 12:30pm-1:30pm Mondays and Wednesdays and 1:50pm-2:50pm Tuesdays and Thursdays. Students that need to make an appointment outside those times may do so at this appointment setting page. 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 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 |