PRESENTATIONS
Regular representations of finite groups via hypergraphs
MIGHTY XL, Saginaw, MI, April 16, 2005
Composite planar coverings of graphs
Algebraic combinatorics on the adriatic coast II, Koper, Slovenia, Nov. 26, 2004
Vertex-transitive graphs : A survey of methods and problems
Czech-Slovak conference GRAPHS 2004, Vysne Ruzbachy, Slovakia, May 25, 2004
Regular maps are the most beautiful maps
invited talk at U of W-S, Superior, Wisconsin, October 10, 2003
Vertex-transitive graphs are beautiful by definition
invited talk at U of M-D, Duluth, Minnesota, October 9, 2003
Fast algorithms for vertex-transitivity recognition
Midwestern graph theory conference, Valparaiso, Indiana, Sept. 20, 2003
Arithmetic conditions for vertex-transitivity of graphs
Fifth slovenian conference on graph theory, Bled, Slovenia, June 25, 2003
Generalizing anti-balanced Cayley maps using skew-morphisms
Algebraic combinatorics on the adriatic coast, Koper, Slovenia, June 20, 2003
Counting closed walks in vertex-transitive graphs
Regional AMS conference, Bloomington, Indiana, April 5, 2003
Constructions of highly symmetrical maps
Comenius University, Bratislava, Slovakia, March 20, 2003
Counting closed walks in vertex-transitive graphs I., II.,
Comenius University, Bratislava, Slovakia, Nov. 6, 13, 2002
Counting closed walks in vertex-transitive graphs,
University of Ljubljana, Slovenia, Oct. 6, 2002
Skew-morphisms of abelian groups,
Czech-Slovak Graph Theory Conference 2002, Rejviz, May 28, 2002
Graph Reconstruction Conjecture and pseudo-similar vertices,
University of Maribor, Slovenia, May 21, 2002
Constructing non-Cayley vertex-transitive graphs,
University of Ljubljana, Slovenia, May 15, 2002
Regular maps from abelian groups,
University of Matej Bell, Slovakia, April 16, 2002
Skew-morphisms and regular Cayley maps of Abelian groups,
Graph Embeddings and Maps on Surfaces, Bratislava, Slovakia, July 12,
2001
The role of symmetry in topological graph theory,
Summer School in Undergraduate Research, Rose-Hulman Institute
of Technology, June 22, 2001
Automorphism groups of Cayley maps,
Algebraic and Topological Methods in Graph Theory,
Auckland, New Zealand, Dec. 13, 2000.
Representing finite groups as regular automorphism groups
of combinatorial structures,
25th Australasian Conference on Combinatorial Mathematics and
Combinatorial Computing,
Christchurch, New Zealand, Dec. 8, 2000.
Combinatorial structures with regular automorphism groups,
MIGHTY XXXIII, Dayton, OH, Oct. 14, 2000
Skew-morphisms of regular Cayley maps
4th Slovenian International Conference in Graph Theory, July 1, 1999
Skew-morphisms of groups and their relation to automorphism groups
of Cayley maps
Czech and Slovak Conference GRAPHS '99, May 28, 1999
Recent developments in the theory of regular Cayley maps
special AMS session on Graph Theory, University of Las Vegas, April 10, 1999
Representing finite groups as automorphism groups of
combinatorial structures
University of Missouri - Rolla, Nov. 16, 1998
Representing finite groups as automorphism groups of
combinatorial structures
Comenius University, Bratislava, Slovakia, Oct. 29, 1998
Finite groups allowing regular Cayley maps
Fifth Czech-Slovak International Symposium, Prague, Czech Rep.,
July 7, 1998
Automorphism groups of combinatorial structures
Centennial Celebration, Lincoln, NE, May 14, 1998
Dale Mesner and Nebraska
joint with T.B. Jajcayova, Centennial Celebration, Lincoln, NE, May 14, 1998
The structure of automorphism groups of Cayley maps and graphs
Syracuse University, NY, Apr.2, 1998
Cryptography in secondary school : An introduction to modern applied
mathematics
joint with R. and M. Sternfeld, Winterfest, Terre Haute, IN, Jan. 30, 1998
Algorithms for constructing generalized difference sets on positive
integers
joint with T.B. Jajcayova, 12-th MCCC conference, Terre Haute, IN, Oct. 1997
Regular Cayley maps
Workshop on Geometric Group Theory, Lincoln, NE, Apr.29, 1997
Every finite simple graph occurs as an induced subgraph of some
strongly regular graph
Southeast Conference on Combinatorics, Graph Theory and Computing, Boca Raton,
FL,
Feb. 19-23, 1996
On the upper and lower bounds on embedding arbitrary graphs into
strongly regular graphs
Combinatorics Seminar at UNL, LIncoln, NE, March 7, 1996
A new product of groups and automorphism groups of Cayley maps
Northern Kentucky University, Apr. 8, 1996
Automorphism groups of Cayley maps
Summer Workshop on Vertex-Transitive Graphs, Montreal, Canada, July 4, 1996
Regular coverings of Cayley maps
regional MAA meeting at RHIT, Terre Haute, IN, Oct.26, 1996
Induced subgraphs of Cayley and strongly regular graphs,
Workshop on Cayley Graphs, Montreal, Canada, Sept. 1996
On the existence of highly non-Cayley vertex-transitive graphs of bounded degree,
10th Midwestern Conf. on Combinatorics, Cryptography and Computing,
Carbondale, IL, Oct. 1995
Constructions of regular Cayley maps, Special session on topological graphy theory,
AMS Mathfest, Burlington, VT, Aug. 1995
Generalized difference sets on positive integers, Annual MAA section meeting,
Omaha, NE, April 1995
Regular Cayley maps: Characterization and constructions, 8th Cumberland Conf.
on Graph Theory, Combinatorics and Computing, Nashville, TN, April 1995
Some more constructions of vertex-transitive graphs that are not Cayley, 8th
Cumberland Conf. on Graph Theory, Combinatorics and Computing, Nashville, TN,
April 1995
Characterization of regular Cayley maps, 101st Annual Meeting of AMS,
San Francisco, CA, Jan. 1995
Automorphism groups of combinatorial structures, one of 18 talks selected from
numerous applications from the Central region for the AMS Special session on new
doctoral work, Stillwater, OK, Oct. 1994
On orders of vertex-transitive graphs that are not Cayley, 9th Midwestern
Conference on Combinatorics, Cryptography and Computing, Lincoln, NE, Oct. 1994
On a construction of vertex-transitive non-Cayley graphs, Vermont Summer
Workshop on Combinatorics and Graph Theory, Burlington, VT, June 1994
Vertex-transitive graphs that are not Cayley, 8th Midwestern Conference on
Combinatorics, Cryptography and Computing, Wichita, KS, Oct. 1993