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Convergence articles

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How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

A survey of the attempts to prove Kepler's conjecture over the past 400 years.
Title page from the Ars Magna, by Gerolamo Cardano, published in 1545. Engraved portrait of the author. First printed text of algebraic solution of cubic equations.
Fibonacci gave a practical rule for approximating the area of an equilateral triangle.
Posters illustrating mathematics concepts in such places as China, Japan, India, and the Americas.
The latest HPM Newsletter is now available here. Read it!
The author became fascinated with the mysterious role of √-1 in electronics. Turning to history for insight, he brings the perspectives of both a practical man and a scholar in conveying the enchantment of mathematics for a non-mathematician.

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

A study of some elements of Greek geometry, as part of a course for liberal arts undergraduates on basic concepts of the calculus.
Cantor's work on Fourier series provides historical motivation for the study of point-set topology.