The Humboldt State University Department of Mathematics


The 45th Harry S. Kieval Lecture**


Thursday, February 17, 2005

8:00 P.M.

Founders Hall 118

Joe Gallian

University of Minnesota Duluth

Breaking Driver's License Codes

Many states use complicated algorithms or formulas to assign drivers' license numbers but keep the method confidential. Just for the fun of it, Professor Gallian attempted to figure out how the states code their license numbers. In this talk he will discuss how he was able to break the codes for several of the states. The talk illustrates an important problem-solving technique that is not emphasized in mathematics classes. It also teaches the lesson that sometimes things done just for the sake of curiosity can have applications.

**A lecture on some popular and/or broad aspects of mathematics attractive to undergraduates and the public

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HSU is an AA/EO institution.

Disability accommodations may be available from event sponsor at 826-5347



Professor Joe Gallian

University of Minnesota Duluth

February 17th, 2005, 4:00 P.M.

Siemens Hall 109

Pre-Colloquium Tea
Library 56 3:30 P.M.

The Making of the 2003 Math Awareness Month Poster

This talk concerns the problem of traversing an by directed grid embedded on a torus so that each vertex is visited exactly once before returning to the starting position. We include an application to computer graphics that became the image on 2003 Mathematics Awareness poster.

Joe Gallian received a Ph.D. from Note Dame in 1971. He has been at the University of Minnesota, Duluth since 1972. He is the author of the book "Contemporary Abstract Algebra" (6th edition) and coauthor of the book "For All Practical Purposes" (6th edition). His research interests include groups, graphs, and combinatorics. He has directed summer research programs for undergraduate students since 1977 and given invited lectures at over 150 colleges and universities. He has received teaching awards from the MAA and the University of Minnesota. Besides the usual math courses, he teaches a Humanities course called the "The Lives and Music of the Beatles" and a liberals arts course on math and sports. .