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Convergence articles

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Illustration of a counting board in Strasbourg
A fish sees a heron looking at him from across a pool, so he quickly swims towards the south. When he reaches the south side of the pool, he has the unwelcome surprise of meeting the heron.
I am a brazen lion; my spouts are my 2 eyes, my mouth, and the flat of my foot. My right eye fills a jar in 2 days, my left eye in 3, and my foot in 4.
A gentleman has a garden of rectangular form and wants to construct a walk of equal width half way round to take up half the garden. What must be the width of this walk?

A translation of and commentary on Frans van Schooten's work on constructions using only a straightedge. Van Schooten's postulates for use of the straightedge, however, allow the copying of one line segment onto another.

A section of a much larger website, dealing with some random topics in the history of mathematics.
A sketch of the history of topology, beginning with the polyhedron formula, but continuing up to the present.
Gun metal of a certain grade is composed of 16% tin and 84% copper. How much tin must be added to 410 lbs. of this gun metal to make a composition of 18% tin?
Reprint of a classic biography of Gauss, with a new forward by Jeremy Gray.
Find the two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27

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