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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...
A section of a much larger website, dealing with some random topics in the history of mathematics.
The answer to the following question is obtained using as optimum strategy-the farmer is getting the "best deal" possible. Can you figure out the solution strategy?...
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.
The history of the four color problem with sketches of the attempted proofs in the nineteenth century and an outline of the computer proof of the twentieth century.
Considering non-unique representation of Maya calendar numbers may help your students understand their own number system better.
This is the title page of the Nova Scientia (1537) of Niccolo Tartaglia (1499-1557). In this work, Tartaglia discussed the mathematics of artillery and developed methods for determining the range of a cannon.
A book delving into the working of the mathematical mind.
Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
The annual meeting of the NCTM always contains sessions dealing with the history of mathematics and its use in teaching.