# Mathematical Digest

### Short Summaries of Articles about Mathematics

in the Popular Press

"Eine Grosse Klein Bottle," in Random Samples. *Science,* 19 April 2002, page 465.

Although the title of this short article might make Felix Klein--andMozart--groan, the article does describe the work of Clifford Stoll, who makesthree-dimensional glass representations of Klein bottles. Stoll is currentlyundertaking the very difficult task of making a one meter tall Klein bottle. Heenjoys the business of constructing the glass bottles, even though it is not aprofitable business: "We're all losing our shirts, but we're having a greattime."

*--- Mike Breen*