John Stillwell

John Stillwell

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Books3

Ideas2

    right triangle Why prove it? Years ago, a student in an introductory math class asked me: “Why do you prove everything; why don’t you just tell us?” Ever since, I have pondered that question. Read More
    white circle adjacent to a curve Pi Day As every mathematician knows, 3.14 is only a rough approximation to π, one that fails to reveal its most fascinating properties, of being irrational and in fact transcendental. Read More