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Convergence articles

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To find three quantities x.y, and z...
Given the frustum of a circular cone with height h.
Paul Halmos Photograph Collection, page 2: Arveson, Aschbacher, Askey, Lininger, Atiyah, Doob
A boy gives 11 coins of equal denomination to a man, and the man finds that their total value in yen is 4 less than his age.
This is the title page to Rene Descartes' Treatise on Method, with its three famous essays on Dioptrics, Meteorology, and Geometry. The third essay contains Descartes' treatment of analytic geometry as well as his theory of equations and his rule for finding the normal to a given curve.
Poster of Banneker, with a brief description of his life and work.

As is the case with a great deal of interesting mathematics, the conic sections are believed to have been discovered in an attempt to solve a problem, a problem which on the surface seems to have nothing to do with conic sections.

A biography stressing Agnesi's deep commitment to help those in need.
Two men have a certain amount of money. The first says to the second, "If you give me 5 denari, I will have 7 times what you have left."
There is a mound of earth in the shape of a frustum of a cone.