a 2 + b 2 = c 2. Remember that from high school math class? That's the Pythagorean theorem, which shows that in a right triangle, where the shorter legs are a and b, the sum of their squares is equal ...

In their new book, Hidden Harmonies, husband and wife mathematics team Robert and Ellen Kaplan pay tribute to that familiar formula you learned in... Pythagorean Theorem: There's More To This Equation ...