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Convergence articles

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The triangle ABC has a right angle at C. Show that 1/ED=1/AC+1/AB
A book delving into the working of the mathematical mind.
A tree is 20 feet tall and has a circumference of 3 feet. There is a vine that winds seven equally spaced times around the tree and reaches the top. What is the length of the vine?
The annual meeting of the NCTM always contains sessions dealing with the history of mathematics and its use in teaching.
A letter to Sam Greitzer, late editor of Arbelos, discussing the derivation of two formulas for calculating pi.
Page 9, Images from Paul Halmos Photograph Collection: Burkholder, Butzer, Calderon, Chern, et al
A great book from which to learn and teach the subject of relativity.
The Arithmetic of Boethius (480-524) dates from the early sixth century. This page is from a mansucript (Plimpton MS 165) that dates from approximately 1294, written on vellum.
A number of 3 digits in base 7 has the same three digits...
A man and his wife drink a barrel of wine at different rates. Find the rate it takes both of them together to drink the wine.

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