Portraits of 92 living mathematicians, with autobiographical comments.

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Portraits of 92 living mathematicians, with autobiographical comments.

If 40 oranges are worth 60 apples, and 75 apples are worth 7 dozen peaches, and 100 peaches are worth 1 box of grapes and three boxes of grapes are worth 40 pounds of pecans, how many peaches can be bought for 100 oranges?

A square walled city of unknown dimensions has four gates, one at the center of each side.

Three equal circumferences with radii 6" are tangent to each other. Compute the area enclosed between them.

If 80 dollars worth of provisions will serve 20 men for 25 days, what number of men will the same amount of provisions serve for 10 days?

A creative expression combining text, design and illustrations, originally designed for the International Congress of Mathematicians in Madrid.

Essays on various aspects of Greek science and mathematics, which help give a context for those aspects of Greek culture.

Find a number having remainder 29 when divided by 30 and remainder 3 when divided by 4.

The author constructs a possible mathematical path from the ancient Babylonians to Pythagoras, Euclid, and the ancient Greeks.

Three vertical posts along a straight canal, each rising to the same height above the surface of the water. By looking at the line of vision, determine, to the nearest mile, the radius of the earth.