Niclas Hedell, a listener, poses a problem from his days in the Swedish military: given two trees in the forest, and a rope twice as long as the distance between the trees, how do you find a third tree so that all three make a right triangle.
And we explain how the Stork can catch the Frog.
We visit a giant model of a four-dimensional polyhedron, made of the fabulous Zome math construction toy. Paul Hildebrandt, president of Zome, weighs in!
Jeff Weeks, author of “The Shape of Space”, tells us about the hypersphere, the Poincaré conjecture and the topology of the universe!
Jeff Weeks, author of “The Shape of Space”, discusses the hypersphere and the famous Poincaré Conjecture!
Peter Winkler, author of “Mathematical Puzzles: A Connoisseur's Collection”, asks how many coins are needed to cover a table.
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