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Convergence articles

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A number is required; that the square shall be equal to twice the cube.
A survey of the attempts to prove Kepler's conjecture over the past 400 years.
A five-volume set of biographies of mathematicians from ancient times to the twentieth century, aimed at secondary students.
An image of the calendar, together with instructions for its use
Poster of Banneker, with a brief description of his life and work.
This is the title page to the 1811 edition of the Descriptive Geometry of Gaspard Monge (1746-1818). This book deals with methods for representing three-dimensional objects in two dimensions. It was written to accompany Monge's courses at the Ecole Polytechnique in Paris.

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.

What is the perpendicular height of a cloud when it's angles of elevation were 35 degrees and 64 degrees as taken by two observers?
This meeting of the Canadian Society for the History and Philosophy of Mathematics takes place in Vancouver, BC, in association with the 2008 Canadian Congress of the Humanities and Social Sciences
Determine the radii of three equal circles decribed within and tangent to a given circle, and also tangent to each other