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Convergence articles

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Problems taken from Chinese sources
A new edition of a classic work on number theory.
Information on previous ESUs
A thorough study of Benjamin Franklin's mathematical accomplishments, in particular his work on magic squares.

Images of the first printed edition of Euclid's Elements

Rabbits and pheasants are put in a basket.

A discussion of why we use "e" to represent the base of the natural logarithm system.

A general formed his men into a square, that is, an equal number in rank and file, and he found that he had an excess of 59 men.
The sum of two numbers is 10 and their product is 40. What are the numbers?
A gentleman has bought a rectangular piece of land whose perimeter is to be 100 rods.