Richard Ehrenborg, Outreach


Academic year 2025--2026: Directing undergraduate research projects with Joseph Bradtmueller, Kris Cottrell, Saul Smith, Nguyen Tang and Nora Trokthi.
Math Ambassadors with Margaret Readdy.

I co-organized the Kentucky Math Carnival April 2023.


November 2021: Nothing Up His Sleeve: Mathematician Creates Card Trick to Illustrate Key Concepts in Information Correction.


Margaret Readdy and I held the 2019 Julia Robinson Math Festival at the Central Public Library in Lexington (November 2019). See pictures.

We coorganizer the first and second Julia Robinson Math Festival in Kentucky, 2017 and 2018.


Margaret Readdy and I are the founders and organizers of the Math Movie of the Month.


I also help out at the Henry Clay High School Math Club.


February 2017: The Double Möbius Strip and cutting it into two.


May 2016: Here is an article at the College of Arts & Science about a Mathmagic talk I gave to the math majors. See also the two Vimeo links one and two. It also appeared at UKNow.


On April 7, 2010, Eric Clark and I gave the juggling lecture (again). See the article Juggling the Equation in the The Kentucky Kernel. Note however that Katie Hume estimated the size of the audience to be 120.

Here is the first part of my lecture "The Mathematics of Juggling" given April 8, 2009, during Geek Week 2009 at the University of Kentucky, together with my fearless graduate student Eric Clark.


Research Experience at Cornell University with Debbie Grier, Geir Helleloid, Michael Levin and Adnan Rubai summer 2020.

Michael Levin received Honorable Mention for the Morgan Prize for his work in the paper, "A probabilistic approach to the descent statistic." pdf


Research Experience at Cornell University with Harold Fox, Dan Johnston and Rajmohan Rajagopalan summer 1997.


richard.ehrenborg@uky.edu