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Convergence articles

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A method for extracting square roots used in Italy through the 18th century was introduced in a manuscript by the 12th century mathematician al-Hassar. Appendix: When Was Fermat Born? (Not in 1601 ...)
A small selection of Euler's works, explained by a master expositor.
Given the cats eye as shown. Let the radius of the eye be given by R. What is the area of the pupil?
A study of some elements of Greek geometry, as part of a course for liberal arts undergraduates on basic concepts of the calculus.
There are two numbers which are to each other as 5 and 6 and the sum of their squares is 2196. What are the numbers?
There are a number of wonderful mathematics websites that readers of Convergence should be aware of. We describe some of them here.
Short sketches on how mathematicians work and think.
If an arc of 45 degrees on one circumference is equal to an arc of 60 degrees on another circle, what is the ratio of the areas of the circle?

Review of Bertram's text on the history of Greek science.

A man entered an orchard through 7 gates, and there took a certain number of apples. When he left the orchard, he gave the first guard half the apples he had and 1 apple more.