*(Updated September 2, 2017)*

**Talks for a Professional Audience **

- Willoughby Fellows Program, Dickinson College, August 2016
- Plenary lecture, Iowa section of the MAA, Graceland University, September 2015
- Plenary lecture, New Jersey section of the MAA, Monmouth University, April 2015
- Northwestern University mathematics colloquium, December 2013
- Featured lecture, Mathematics of Various Entertaining Subjects (MOVES) Conference, Museum of Mathematics, August 2013
- Philadelphia Area Seminar on the History of Mathematics, Villanova University, September 2012
- Topology/Geometry seminar, Rutgers University, April 2012
- Applied and Computational Math Seminar, George Mason University, January 2011
- Dynamical Systems Seminar, Penn State University, September 2010
- Various Aspects of Dynamical Systems, International Congress of Mathematicians Satellite Conference, M. S. University, Baroda, Vadodara, Gujarat, India, August 2010
- The keynote “Euler lecture” for the 2010 Euler Conference, Adelphi University, July 2010
- Tetrahedral Geometry/Topology Seminar, April 2010
- Millersville–Franklin & Marshall Colloquium, April 2009
- Tetrahedral Geometry/Topology Seminar, April 2008
- Brigham Young University, December 2007
- Plenary lecture at the EPaDel sectional meeting of the Mathematical Association of America, Delaware State University, April 2007
- Philadelphia Area Seminar on the History of Mathematics, Villanova University, March 2007
- Dynamical Systems Seminar, University of Maryland, March 2007
- The Frederick V. Pohle Colloquium on the History of Mathematics, Adelphi University, November 2005
- Joint meeting of the American Mathematical Society and the Real Sociedad Matematica Espanola, Seville, Spain, June 2003
- Dynamical Systems Seminar, University of Maryland, November 2001
- University of Cincinnati Mathematics department colloquium, March 1999
- University of Cincinnati Dynamical Systems seminar, March 1999
- Michigan State University Mathematics department colloquium, September 1998
- One hour invited plenary lecture at the University of Cincinnati for the conference “Smalefest: Global Analysis 30 Years Later,” March 1998
- Northwestern University, Dynamical Systems Seminar, November 5, 1997
- Northwestern University, Dynamical Systems Seminar, September 30, 1997
- Northwestern University, Dynamical Systems Seminar, June 5, 1997

**Talks for a General Audience **

- MAA Distinguished Lecture series, Celebration of Mind event, MAA Carriage House, Washington, DC, October 2017
- Gettysburg College, October 2017
- Shippensburg University, September 2017
- MAA Chan Stanek Lecture for Students, MAA MathFest 2017, Chicago, August 2017
- Mount St. Mary’s College ACM/MAA student chapter lecture, November 2016
- Keynote address at the Dickinson College Math/CS major’s dinner, April 2016
- Muhlenberg College, September 2015
- Undergraduate Prize Lecture, Northwestern University, May 2014
- Focus on Math Colloquium, Brigham Young University, November 2012
- Juniata College, October 2012
- Randolph-Macon College, October 2012
- Keynote address at the Elizabethtown College Pi Mu Epsilon Banquet, April 2012
- Elizabethtown College mathematics colloquium, April 2012
- Shippensburg University mathematics colloquium, February 2012
- Lafayette College mathematics colloquium, December 2011
- Notre Dame University, Math for Everyone lecture series, November 2011
- Dickinson College Rush Hour science lecture series, September 2011
- Hood College’s Pi Mu Epsilon Lecture, April 2010
- Messiah College, April 2010
- Mount St. Mary’s Pi Mu Epsilon Lecture, March 2010
- Gettysburg College Mathematics Colloquium, November 2009
- Juniata College Mathematics Colloquium, November 2009
- Keynote address at the Millersville University Mathematics Honors Banquet, April 2009
- Hamilton College Mathematics Colloquium, April 2009
- Shippensburg Student Mathematics Conference, keynote speaker, March 2009
- Brigham Young University, December 2007
- Shippensburg University, November 2007
- Bucknell University, October 2007
- Keynote address at the Elizabethtown College Pi Mu Epsilon Banquet, April 2007
- Elizabethtown College mathematics colloquium, April 2007
- FaculTEA, Dickinson College, April 2007
- Keynote address at the Millersville University Mathematics Honors Banquet, April 2006
- Dickinson College Math/CS chat, November 2005
- Shippensburg University, November 2004
- Dickinson College Math/CS chat, November 2004
- Keynote speaker, Department of Mathematics and Computer Science Majors dinner, May 2004
- Hamilton College, February 2004
- Dickinson College Math/CS chat, November 2002
- Swarthmore College, September 2002
- Alumni College course at Dickinson College, June 2002
- Gettysburg College Math Department Colloquium, January 2002
- Dickinson College Math/CS chat, October 2001
- Dickinson College Math/CS chat, February 2000
- Furman University Mathematics Colloquium, February 2000
- North Central College Mathematics Colloquium, February 2000
- Coe College Mathematics Colloquium, February 1998

**Miscellaneous Presentations, Panel Discussions, Interviews, etc. **

- Panelist for “Writing for MAA Journals and Magazines,” MathFest 2014, Portland, OR, August 2014
- Panelist in a First Year Seminar prep session, May 2014
- Interviewed by Sol Lederman on his Inspired by Math/Wild About Math! podcast, February 2013
- Presentation on my use of wikis, podcasts, online LaTeX software, etc. for the February 2013 Dickinson College Board of Trustees visit
- Panelist for “Men: In focus,” sponsored by Men Overcoming Restrictive Expectations (M.O.R.E.), Dickinson College, October 2012
- Willoughby Fellows alumni panel to discuss the use of technology in teaching, Willoughby Fellows Program, Dickinson College, August 2012
- Panelist for the “Dickinson’s distinctive approach to the natural sciences” discussion during a fall admissions open house, Dickinson College, September 2011
- Interview by Samuel Hansen on his Acme Science/Strongly Connected Components podcast, March 2010
- “Family Matters,” a panel about balancing family life and work, sponsored by the Association for Women in Mathematics, MathFest 2009, August 2009, Portland, OR
- On-air interview with Jerry Bowyer, Pittsburg Business Radio, AM1360 WMNY, April 2009
- Panelist for discussion of “The College’s Fraternity and Sorority Community in the Eyes of the College’s Faculty and Administration,” February 2004
- Panelist for discussion of “Intellectual community,” for new faculty orientation, Fall 2003
- Presenter for the “Sexual Assault Prevention” discussion for incoming first year students, orientation week, Fall 2001

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