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Convergence articles

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An erect pole of 10 cubits has its base moved 6 cubits. Determine the new height and the distance the top of the pole is lowered.
A translation of part of a thirteenth century work by the Byzantine monk Maximus Planudes on the Hindu-Arabic numerals and the algorithms for calculation.
The symposium this year will discuss Gauss's Disquisitiones Arithmeticae.
A certain man had in his trade four weights with which he could weigh integral pounds from one up to 40. How many pounds was each weight?

[Translation of title: Algebra in the Time of Babylon. When Mathematics Were Written on Clay.] A thorough review of Jens Hoyrup's revision, expansion, and French translation of his own 1998 book for Danish high-school students.

The Tree of Proportions and Proportionality from the De Divina Proportione of Luca Pacioli published in 1509.
Given a semicircle, Prove that if O is the circle's center, DO=OE.
A survey of this theorem's 4000 year history, with applications to many fields.
The radius of a circle is 3.20 meters. Compute to within .001m the areas of the inscribed and circumscribed equilateral triangles.
An excellent book surveying the history of the philosophy of mathematics from the time of Plato to the nineteenth and early twentieth centuries.