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Convergence articles

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Find two number with sum 20 and when squared their sum is 208.
Whimsical posters of fifteen mathematicians with brief biographies.
If an equilateral triangle whose area is equal to 10,000 square feet be surrounded by a walk of uniform width, and equal to the area of the inscribed circle, what is the width of the walk?
This textbook seamlessly combines the history of non-Euclidean geometry with the mathematical ideas.
Guidelines for Submissions
A biography of the 18th century author of an early calculus text, with some translations from the text.
The beginnings of land measurement in the early United States and how this affected American democracy.
Find a number having remainder 29 when divided by 30 and remainder 3 when divided by 4.
Classrom suggestions for integrating Leonardo's ideas in several different classes
A bridge is built across a river in 6 months by 45 men. It is washed away by the current. Required the number of workmen sufficient to build another of twice as much worth in 4 months.