The Humboldt State University
Department of Mathematics

Presents:

# The 45th Harry S. Kieval Lecture**

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## Thursday, February 17, 2005

*8:00
P.M.*

*Founders Hall 118*

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### 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**

**For More Information go to: **__http://www.humboldt.edu/~mathdept/HarrySKieval/kl.html__

**HSU is an AA/EO institution.**

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

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#### MATHEMATICS DEPARTMENT COLLOQUIUM

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Professor Joe Gallian

University of Minnesota Duluth

##### Thursday

##### 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.

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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. .