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Convergence articles

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A collection of articles about historical and contemporary women in mathematics.
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Three images from Kepler's 1609 Astronomia Nova, the text in which he introduced his first two laws of planetary motion

Determine the dimensions of the least isosceles triangle ACD that can circumscribe a given circle.
A guest on horseback rides 300 li in a day. The guest leaves his clothes behind and the host rides off to catch up with the guest once he discovers the clothes. Assuming the host rides without stop tell how far he can go in a day?
Find the area of the elliptical segment cut off parallel to the shorter axis;
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Suppose that the propability of success in an experiment is 1/10. How many trials of the experiment are necessary to insure even odds on it happening at least once?
A cylindrical tin tomato can is to be made which shall have a given capacity. Find what should be the ratio of the height to the radius of the base that the smallest possible amount of tin shall be required.

An elementary introduction to Euler squares and how they can be used in teacher training