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Convergence articles

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One says that 10 is divided into three parts and if the small part is multiplied by itself and added to the middle one multiplied by itself the result is the large one multiplied by itself...
An analysis of James Gregory's proof of the Pappus-Guldin theorem, along with the original documents both in Latin and English.
If in a circle ABDC, circumscribe an equilateral triangle ABC; the straight line AD is equal to the sum of the two straight lines BD and DC: required a demonstration.
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?
Three men wish to buy a horse but none have a sufficient amount of money for the purchase; to do so they must borrow from each other. How much money does each man have and what is the price of the horse?
Short sketches on how mathematicians work and think.
Divide 100 loaves of bread among 10 men including a boatman, a foreman, and a doorkeeper, who receives double portions. What is the share of each?
Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
Portraits of 92 living mathematicians, with autobiographical comments.
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.

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