How Euler resolved the paradox first noted by Maclaurin that nine points should determine a curve of order three, yet two such curves can intersect in nine points

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A wonderful survey of the history of mathematics, emphasizing its relationship with the ambient culture.

Page from al-Khwarizmi's algebra text written in about 825. The proof of the rule for solving a quadratic equation of the form "squares plus roots equal numbers".

Suppose a ladder 60 feet long is placed in a street so as to reach a window 37 feet above the ground on one side of the street...

A compilation of ethnomathematical ideas from around the world.

A man plants 4 kernels of corn, which at harvest produce 32 kernels: these he plants the second year; now supposing the annual increase to continue 8 fold, what would be the produce of the 15th year, allowing 1000 kernels to a pint?

A collection of short biographical sketches of people involved in the development of calculus, as well as brief descriptions of important events in that development.

Arithmos seminars are 24-hour workshops on the classics of mathematics, read in the original, or in a scholarly English translation.

Cantor's work on Fourier series provides historical motivation for the study of point-set topology.

The steamer, Katie, leaves the wharf at New Orleans and runs an average speed of 15 mph. When Katie had gone 25 miles, the steamer R.E. Lee leaves the wharf and runs the average speed of 18 mph. How far will the Lee go before she overtakes the Katie?