Mathematics Conferences and Presentations
- Discrete Math Seminar, Middle Tennesee State University March 15, 2017
- Atlanta Lecture Series in Combinatorics and Graph Theory XV, Georgia Tech University, April 11-12 2015
- 26th Cumberland Conference on Combinatorics, Graph Theory & Computing, Middle Tennessee State University, May 2013
- Atlanta Lecture Series in Combinatorics and Graph Theory II, Georgia State University, February 25-27, 2011
- Atlanta Lecture Series in Combinatorics and Graph Theory I, Emory University, November 2010
- AMS 2009 Fall Southeastern Meeting, October 30 – November 1, 2009 Florida Atlantic University, Boca Raton, FL
- MIGHTY XLVII Illinois Institute of Technology, Chicago, Ill November 8, 2008
- 21st Cumberland Conference on Graph Theory, Combinatorics and Computing (dedicated to Mike Plummer for his 70th birthday) May 15-17 2008, Vanderbilt University, Nashville, TN
- AMS Meeting #1038, Special Sessions on Graph Theory and Topological Combinatorics , Apr 5-6 2008, Indiana University, Bloomington, IN
- MIGHTY XVIV Wright State University May 11-12, 2007
- SIAM Conference on Discrete Mathematics June 25-28, 2006, University of Victoria (Invited to Speak at Graph Minors Mini-symposium)
- 42nd Midwest Graph Theory Conference MIGHTY XLII April 28-29, 2006 OSU Marion (Conference Organizer)
- Wright State Colloquium Speaker, April 21, 2006
- SUNY Potsdam – Clarkson College REU Program, July 1, 2005 (Invited Presentation in Seminar on Graph Minors)
- MIGHTY XL Midwest Graph Theory Conference, April 15-16, 2005, Saginaw Valley State University
- SIAM Conference on Discrete Math June 13-16, 2004 Vanderbilt University (Organized Mini-symposium on Graph Minors)
- The XXVIIth Ohio State-Denison Mathematics Conference June 11-13, 2004 – The Ohio State University, Columbus, Ohio
- Advances in Graph and Matroid Theory December 13-16, 2003 The Ohio State University Co-organizer and Speaker
- GRAPH THEORY August 19-23, 2002. University of Southern Denmark
- 2002 Fall Southeastern Section Meeting of AMS, November 9-10, 2002 Orlando, FL
- A Conference on Matroid Structure Theory in Honour of W.T.Tutte 1917-2002, July 1-5 , 2002 Ohio State University
- 2002 AMS and MAA Spring Southeastern Section Meetings, March 8-10, 2002 Atlanta, GA
- The XXVth Ohio State-Denison Mathematics Conference, May 18-21, 2000 Ohio State University
- Special Session on Graph Theory, Friday April 14, 2000, Georgia Tech
- MIGHTY XXXI, April 10, 1999 Oakland University
- 12th Cumberland Conference on Combinatorics, Graph Theory, and Computing May 20-22 1999, University of Louisville, Louisville KY
- AMS Meeting #941, Special Sessions in Graph Theory, March 18-21, 1999 University of Illinois
- MIGHTY XXVIII, Oct. 25, 1997, Eastern Michigan University
- 919th AMS Meeting (1997 Spring Southeastern Sectional Meeting) (special sessions in graph theory), Mar 21-22, 1997 University of Memphis
- AMS Conference at LSU Spring 1996
- MIGHTY XXIV, April 29, 1995 University of Toledo
- MIGHTY XXI October 29-30, 1993 Ball State University