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Convergence articles

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Chuquet claimed that if given positive numbers a, b, c, d then (a + b) / (c + d) lies between a/c and b/d. Is he correct? Prove your answer
Suppose a lighthouse is built on the top of a rock; the distance between a place of observation and that part of the rock level with the eye is 620 yds.
A lively description of ten of the greatest feuds in mathematics.
Two men brought their fish through customs. Find how much the fish cost, and what is the customs fee.
A study of the rise of English algebra from the Medieval period to the end of the seventeenth century.
This website offers a collection of biographies of mathematicians and a variety of resources on the development of various branches of mathematics. It is an extremely rich and extensive site.
This conference takes place in 2006 at Pennsylvania State University, Erie.

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

Title page from the Ars Magna, by Gerolamo Cardano, published in 1545. Engraved portrait of the author. First printed text of algebraic solution of cubic equations.
A brief introduction to the life of John Napier, along with an animation of calculations using Napier's bones.

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