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Convergence articles

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Now there are three sisters who leave home together.
A certain merchant increases the value of his estate by 1/3...
A wonderful survey of the history of mathematics, emphasizing its relationship with the ambient culture.
A set of n disjoint, congruent circles packs the surface of a sphere S so that each region of the surface exterior to the circles is bounded by arcs of three of the circles.

The author shows how teachers can use Leonhard Euler's original works in the classroom to explore Euler's famous polyhedral formula,
V + F = E + 2.

A compilation of ethnomathematical ideas from around the world.
A history of the various algebraic structures that came together to give us "abstract algebra" by early in the twentieth century.
There is a log 18 feet long, the diameter of the extremities being 1 ft and 2.6 ft respectively...
Given four numbers whose sum is 9900; the second exceeds the first by 1/7 of the first...
The steamer, Katie, leaves the wharf at New Orleans and runs an average speed of 15 mph. When Katie had gone 25 miles, the steamer R.E. Lee leaves the wharf and runs the average speed of 18 mph. How far will the Lee go before she overtakes the Katie?

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