# Saul Stahl

Saul Stahl, Professor Emeritus

Department of Mathematics

The University of Kansas

Phone: 785-550-5882

Email: stahlex@ku.edu

## Research Interests:

Topological graph theory and graph (multi)colorings.

## Sample Research Papers:

- On the zeros of some genus polynomials,
*Canad. J. Math.*, 49 (1997), 617-640. - The multichromatic number of some Kneser graphs,
*Disc. Math.*185 (1998) 287-291. - Note on the nth chromatic numbers of the Grotzsch graph,
*J. Graph Theory*, 20 (1996) 207-209.

## Educational Interests:

I am working on creating alternative curricula for standard post calculus mathematics courses. I try to make the subject matter more interesting by providing it with a focus and using the historical evolution of the subject matter as a guide.

## Texts:

*The Poincare Half-Plane: A Gateway to Modern Geometry*, Jones & Bartlett, 1993.

(2nd edition 2008 has the reverse title :

*“A Gateway to Modern Geometry, the Poincaré Half-Plane.”*)

*Introductory Modern Algebra: A Historical Approach*, J. Wiley & Sons, 1996 (2nd edition 2008).

*A Gentle Introduction to Game Theory*, AMS Mathematical World Volume 13, 1999.

*Real Analysis: A Historical Approach*, J. Wiley & Sons, 2nd edition 1999.

*Geometry from Euclid to Knots.*(2nd edition 2011).

This is a geometry text for prospective high school teachers. It is based on Euclid's

*The Elements*but contains plenty of exercises as well as some additional topics.

*Introduction to Topology and Geometry.*(2nd edition 2013)

This is meant to be used on the senior/first year graduate level.

*Understanding Modern Mathematics.*

Mathematics for liberal arts majors. 2nd edition, Dover, under the title

*Mathematics Old and New*. 2017. Work in progress