Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

What happened when a gambler asked for help from a mathematician? The formal study of Probability. Infinite Series is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV ...

Math is always reinventing itself. In the late 19th century, its foundations were still shaky, its definitions and assumptions vague and uncertain. Mathematicians spent decades fixing the problem, ...