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In This Issue

ExtraSolar: Three new projects aim to capture a first: an image of a planet orbiting a star outside the solar system
Simpleminded Voters: Informed citizens avoid information overload by taking strategic shortcuts before casting their ballots
Forest invades tundra: ...and the new tenants could aggravate global warming
This week's table of contents

Ivars Peterson

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Home / Columns / Math Trek / Math Trek : The Complexity of TipOver and Other Puzzles

Solving puzzles such as TipOver and River Crossing can be surprisingly difficult.

Published: 02/14/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Divide-and-Conquer Multiplication

The most efficient way to multiply two large numbers is often far from obvious.

Published: 02/11/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Sudoku Class

Sudoku puzzles are showing up in the math classroom.

Published: 02/02/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Knitting Network

A skein of intriguing mathematical objects comes out of an evening devoted to knitting, crocheting, and other crafts.

Published: 01/25/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : A Polyhedron with a Hole

A polyhedron with seven faces, 14 vertexes, 21 edges, and a hole makes an intriguing lamp.

Published: 01/18/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Art of the Tetrahedron, Revisited

A New Orleans sculptor and his tetrahedron-based artworks survived Hurricane Katrina.

Published: 01/11/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Laying Track

Switches in train track layouts lead to a tangled math problem.

Published: 01/03/2007
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : The Coin in the Cake

Hiding a coin in a cake offers a lucky slice and a tantalizing math problem.

Published: 12/22/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Rankings, Tournaments, and Playoffs

All outcome-based sports ranking systems are fundamentally flawed.

Published: 12/15/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Travels of a Shopper

Shoppers tend to be a lot less efficient than they could be when picking up groceries at the supermarket.

Published: 12/07/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Scripting Boffo Box Office

A computer model can help select movie scripts that lead to success at the box office.

Published: 12/01/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Geometry in Court

The Pythagorean theorem and geometric series played leading roles in two legal disputes.

Published: 11/20/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Form Plus Function

Numbers, lines, squares, and shadows add up to an intriguing set of artworks rooted in mathematical concepts.

Published: 11/13/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Quark Park

Math-inspired and science-related artworks enliven an imaginatively landscaped sliver of parkland.

Published: 11/07/2006
Found in: Mathematics
Home / Columns / Math Trek / Math Trek : Designer Decimals

Fractions can yield amazingly familiar decimal expansions.

Published: 10/31/2006
Found in: Mathematics

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