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A Round Town

There is a round town 8000 feet in circumference.

The History of Mathematics: A Brief Course

A new edition of a brief history text, arranged topically rather than chronologically.

Mathematical Treasure: Ratdolt's Euclid's Elements

Images of the first printed edition of Euclid's Elements

Complexities: Women in Mathematics

A collection of articles about historical and contemporary women in mathematics.

Mathematics in Ancient Iraq: A Social History

A new history of mathematics in ancient Mesopotamia, concentrating on its social aspects.

Mathematics as the Science of Patterns

Mathematics is often referred to today as the "science of patterns." But has this always been true historically, or is this something that happened in recent times? The question is discussed here with reference to the work of Euclid and Jacob Steiner.

A Linear Hypocycloid

Prove geometrically that the hypocycloid is a straight line when the radius of the rolling circle is one-half the radius of the fixed circle.

Faster Than a Speeding Horse

A horse, halving its speed each day, travels 700 miles in 7 days. How far does it travel each day?

Family Travels

Now there are three sisters who leave home together.

The Recruiting Officers

Two officers each have a company of men, the one has 40 less than the other.