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ARTICLES

**Geometry, Voting, and Paradoxes**

*by Donald G. Saari and Fabrice Valognes*

**Global Positioning System: The Mathematics of GPS Receivers**

*by Richard B. Thompson*

**A Convergence of Limits**

*by Richard J. Bagby*

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NOTES

**Squares Inscribed in Angles and Triangles**

*by Herbert Bailey and Duane DeTemple*

**An Unexpected Maximum in a Family of Rectangles**

*by Leon M. Hall and Robert P. Roe*

**Counting Integer Triangles**

*by Nicholas Krier and Bennet Manvel*

**Math Bite: On the Nowhere Differentiability of the Coordinate Functions of the Iséki Curve**

*by Hans Sagan*

**The Sufficient Condition for the Differentiability of Functions of Several Variables**

*by Xu Pingya*

**Math Bite: Equality of Limits in Ratio and Root Tests**

*by Prem N. Bajaj*

**Turning Lights Out with Linear Algebra**

*by Marlow Anderson and Todd Feil*

**Digitally Determined Periodic Points**

*by David Sprows*

**When is a Limit Function Continuous? **

*by Russell A. Gordon*

**Cusps on Wheels on Wheels on Wheels**

*by Peter Giblin and Matthew Trout*

**The Telescoping Series in Perspective**

*by Marc Frantz*

**Proof Without Words: The Area of a Right Triangle**

*by Klara Pinter*

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PROBLEMS

Proposals 1554-1558

Quickies 883-884

Solutions 1529-1533

Answers 883-884

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REVIEWS

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NEWS AND LETTERS

Letters to the Editor

Carl B. Allendoerfer Awards 1998

A Web-Searchable Database for Mathematics Magazine