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Convergence articles

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There are two numbers whose sum equals the difference of their squares.
A survey of concepts of infinite sets over the centuries.
A biography of Arthur Cayley, the outstanding mathematician of Victorian Britain.
Portraits of 92 living mathematicians, with autobiographical comments.
Four men already having denari found a purse of denari; each man has a different amount of denari before they found the purse. Find out how much denari each man has.
One hundred men besieged in a castle, have sufficient food to allow each one bread to the weight of 14 lot a day for ten months.
A round pond sits in a rectangular garden. Its center is inaccessible; however, you know the distances from each corner of the garden to the center of the pond: 60, 52, 28, and 40 yards. What is the radius of the pond?
The Midwest History of Mathematics Conference will take place in the Reinhart Center of Viterbo University, LaCrosse, Wisconsin, on October 3 and 4, 2008.
Jacqueline Stedall has uncovered the numerous algebraic ideas of Thomas Harriot from the early 17th century and has organized them into a readable treatise.
Now a pile of rice is against a wall, it has a base perimeter of 60 feet and a height of 12 feet.