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Amazingly, the complexities of voting theory can be explained and resolved with comfortable geometry. A geometry which unifies such seemingly disparate topics a

Plane geometry is developed from its basic objects and their properties and then moves to conics and basic solids, including the Platonic solids and a proof of

This text is the fifth and final in the series of educational books written by Israel Gelfand with his colleagues for high school students. These books cover th