However, actually proving that you can't write pi as a fraction is a surprisingly knotty issue. Mathematicians don't have a ...

So why pi? Why does this number, this concept have its own special ... IRA FLATOW: It seems to me like when you learn calculus, first, you talk about making tiny little rectangles under an area. And ...

Pi shows up in trigonometry, calculus, and even statistics. Pi occurs in wave motion formulas, probability distributions, and complex numbers. Pi is employed by engineers and physicists in the ...