Welcome to my homepage! I am an Associate Professor in the Department of Mathematics of the University
of Nebraska–Lincoln. My research interests are in discrete mathematics,
particularly graph theory, combinatorics, probability, and algorithms.

- Contact information and my curriculum vitae.
- Mathematics that I am interested in, as well as preprints of publications and mathematical data.
- Information about classes I am teaching, including Summer 2014 Math 812T Geometry for Geometry Teachers.
- West Fest 2014, a celebration of Doug West's 60th birthday.
- The course Math in the City, an interdisciplinary hands-on learning experience.
- Calendar of math department seminars. Info on seminar rooms.
- Discrete Math Seminar (archive of fall 2008 to fall 2011).
- The UNL Math Club and Pi Mu Epsilon student organizations.
- The Lincoln Area Math Teacher's Circle.
- Rocky Mountain-Great Plains Graduate Research Workshop in Combinatorics.
- Research Experience for Undergraduates (REU) for summer 2009.
- Research Experience for Graduate Students (REGS) at the University of Illinois at Urbana-Champaign.
- Information about computer topics, including math software and LaTeX.

To contact me, send email to hartke @ No . Spam . mäth . únl . edu (appropriately changed).