University of Regina

Department of Mathematics and Statistics

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Emeritus & Adjunct Professor, U of R, Adjunct Professor, UVic, Ph.D. 1970 (Alberta) Field of Research. Combinatorics and graph theory: Extremal graph theory, colouring theory, tournaments. Class Web Pages. Math127-001 Fall 2005 Math221-002 Fall 2005

Selected Recent Publications/Articles:

• Star Forests, Dominating Sets and a Geometric Ramsey-type problem,   S. Ferneyhough, R. Haas, D. Hanson & G. MacGillivray,  Discrete Mathematics 245 (2002), 255-262.
• Bounds for Partial List Colourings, R. Haas, D. Hanson & G. MacGillivray, Ars Combinatoria 67 (2003) pp. 27-31).
• Weakening Arcs in Tournaments, D. Hanson & J.W. Moon: Journal of Graph Theory 45: 142-162, 2004.