I am originally from Park Rapids, Minnesota, a small resort town in the lake country of central Minnesota.
I did my undergraduate work in Mathematics at Carleton College in Northfield, Minnesota.
I did my graduate work in Mathematics at the University of Wisconsin-Madison, under the direction of Paul Terwilliger.
I earned my Ph. D. in Mathematics in May of 2000 and then spent five years as an Assistant Professor of Mathematics at Gettysburg College. I returned to Carleton in the fall of 2005, as an Assistant Professor of Mathematics, I was promoted to Associate Professor of Mathematics in the fall of 2009, and I was promoted to Professor of Mathematics in the fall of 2015.
I was Department Chair from July of 2017 until June of 2020 and I became an Associate Dean of the College in July of 2021.
My mathematical interests are in algebra and combinatorics, especially enumerative and algebraic combinatorics. My research includes work on pattern-avoiding permutations, a generalization of the Terwilliger algebra of a distance-regular graph or association scheme, the combinatorics of symmetric functions, and the combinatorics of the Legendre-Stirling and Jacobi-Stirling numbers. I am also interested in undergraduate problem-solving, undergraduate research, and games and puzzles with mathematical connections. In my spare time I enjoy running, baking bread, pizza, lasagna, cheesecake, cookies, and brownies, reading, writing, and playing games like Dominion, Seven Wonders, and Azul (Stained Glass of Sintra) with my family.