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

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