# Mathematics & Computer Science

### Elyn Rykken

EDUCATION | PUBLICATIONS | TALKS/PRESENTATIONS

Ph.D. Mathematics, Northwestern University, Evanston,IL.

- Thesis: Markov Partitions and the Expanding Factor for Pseudo-Anosov Homeomorphisms.
- Thesis Advisor: Professor John Franks.
- Research Area: Dynamical Systems.

M.A. Mathematics, Northwestern University, Evanston, IL.

B.A. Mathematics, Summa cum Laude, St. Olaf College, Northfield, MN.

- While at St. Olaf, I participated in the Budapest Semesters in Mathematics Program. Through this program, mathematics majors in their junior/senior years spend one semester in Budapest studying under the tutelage of eminent Hungarian scholar-teachers. Courses are taught in English.

- M. Dworkin and E. Rykken, “Constructions on the Sphere,” Math Horizons, Volume 23, No. 4, April 2016, pp. 8-11.
- E. Rykken and J. Sorensen, “Sprinkler Bifurcations and Stability,” College Mathematics Journal, Volume 41, No. 5, November 2010, pp. 383-391(9). To download a pdf preprint, click here.

- M. Carroll, E. Rykken and J. Sorensen, “Waiting to Turn Left?” College Mathematics Journal, Volume 41, Number 1, January 2010 , pp. 60-63. To download a pdf preprint, click here.

- A. Crannell, G. La Rose, T. Ratliff, and E. Rykken, “ Writing Projects for Mathematics Courses: Crushed Clowns, Cars, and Coffee to Go, ” Washington DC: Mathematics Association of America, 2004.

- M. Carroll, E. Rykken, and J. Sorsensen, "The Canadians Should Have Won!?" Math Horizons, February 2003. To download a pdf preprint, click here.

- M. Carroll, M. Jones, and E. Rykken, “ The Wallet Paradox Revisited,” Mathematics Magazine, Volume 74, No. 5, December 2001. For a copy in pdf format, click here.

- M. Carroll and E. Rykken, “Stuck in Traffic in Chicago: A World Wide Web Calculus Project,” MAA Online's Innovative Teaching Exchange, first appeared August 2000. (This is a refereed electronic journal still available at http://www.maa.org/t_and_l/exchange/ite7/traffic.html).

- “Expanding Factors for Pseudo-Anosov Homeomorphisms,” Michigan Mathematical Journal, Volume 46, Fall 1999, pp. 281 - 296.

- E. Rykken and J. Sorensen, “Volumes and History: A Calculus Project Involving Reading an Original Source,” MAA Online's Innovative Teaching Exchange, first appeared Fall 1999.(This is a refereed electronic journal still available at http://www.maa.org/t_and_l/exchange/ite5/hodgson.html).

- J. Franks and E. Rykken, “Pseudo-Anosov Homeomorphisms with Quadratic Expansion,” Proceedings of the AMS, Volume 127, Number 7, July 1999, pp. 2183 - 2192.

- “Markov Partitions for Hyperbolic Toral Automorphisms of the 2-Torus,” Rocky Mountain Journal of Mathematics, Volume 28, Number 3, Fall 1998, pp. 1103-1124.

- Transitioning to a Laguerre Basis,” MAA Session on Innovative and Effective Ways to Teach Linear Algebra, Joint AMS - MAA Mathematics Meetings, San Francisco, CA, January 13 - 16, 2010. This talk was presented jointly with M. Carroll.

- “The Blarney's Party: an Exercise in Mathematical Induction,” MAA session on the Power of Inductive and Recursive Thinking, Joint AMS - MAA Mathematics Meetings, San Diego, CA, January 6 - 9, 2008. Presented jointly with Linda McGuire.

- “A Remote Sensing Demo Using ENVI,” MAA session on Innovative and Effective Ways to Teach Linear Algebra., Joint AMS - MAA Mathematics Meetings, San Diego, CA, January 6 - 9, 2008. Presented jointly with Linda McGuire.

- “What Does a Mathematician Do? Presenting Recent Articles in Upper Level Courses,” MAA Session on Getting Students To Discuss and To Write About Mathematics, Joint AMS – MAA Mathematics Meetings, Atlanta, GA, January 5 – 8, 2005.

- “On Thin Ice: Problems with the New System for Judging Figure Skating,” Contributed Paper Session on Popular and Recreational Mathematics, MAA-NJ Sectional Meeting, Rutgers, March 27, 2004.

- “Remote Sensing Meets Linear Algebra,” MAA Session on Mathematical Models of the Environment, Joint AMS-MAA Mathematics Meetings, Phoenix, AZ, January 7 – 10, 2004.

- “The Canadians Should Have Won!?”, MAA Contributed Paper Session, Joint AMS-MAA Meetings, Baltimore, MD, January 15 - 18, 2003.

- “The Wallet Paradox Revisited,” MAA Contributed Paper Session, Joint AMS-MAA Meetings, San Diego, CA, January 5-9, 2002.

- “Stuck in Traffic in Chicago: A World Wide Web Project,” MAA Session on Innovative Uses of the Word Wide Web in Teaching Mathematics, Joint AMS-MAA Mathematics Meetings, New Orleans, LA, January 13, 2001.

- “Stuck in Traffic,” MAA Poster Session on Using the Web in Teaching Undergraduate Mathematics, Joint AMS-MAA Mathematics Meetings, San Antonio, TX, January 14, 1999.

- “Volumes of Solids of Revolution: An Historical Approach,” MAA Contributed Paper Session on The Uses of History in the Teaching of Mathematics, Joint AMS-MAA Mathematics Meetings, Baltimore, MD, January 7-10, 1998.

- “Constructing Markov Partitions for Pseudo-Anosov Homeomorphisms,” AMS Special Session on Low Dimensional Dynamics, Milwaukee, WI, October 24-25, 1997.

- “Calculator Calculus for Commuters,” MAA Session on The Use of Hand-Held Technology in the Teaching and Learning of Mathematics, Joint AMS-MAA Mathematics Meetings, San Diego, CA, January 8-11, 1997.

- Two talks at the Dynamical Systems Seminar at Montana State University, Bozeman, MT, May 1996.

- “Pseudo-Anosov Homeomorphisms,” Twenty-fifth Annual Midwest Dynamical Systems Conference, Cincinnati, OH, October 1995.

- “Conjugacies of Matrices in GL(2,Z),” Dynamical Systems Seminar, Northwestern University, Evanston, IL, January 7, 1993.