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Convergence articles

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Given a right triangle where you know the length of the base and the sum of the perpendicular side and the hypotenuse.

Problems from a 15th century French manuscript, including one with negative solutions

A survey of concepts of infinite sets over the centuries.
This is page 167 from the Exercitationes mathematicae (1657) of Frans van Schooten (1615-1660). This book contained a collection of mathematical construction problems, among much else. It was one of the books read by Isaac Newton while he was a student at Cambridge University and helped to introduce him to modern mathematics. On this page we see a construction enabling one to find the distance across a river.
Eratosthenes' measurement of the earth, in a form that's easy for teachers to use in the classroom.

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Dummy View - NOT TO BE DELETED