Add Yahoo as a preferred source to see more of our stories on Google. One of the most important numbers in math might today be named after the Greek letter π or “pi”, but the convention of ...

Celebrate Pi Day and read about how this number pops up across math and science on our special Pi Day page. For more than two millennia, mathematicians have produced a growing heap of pi equations in ...

One of the most important numbers in math might today be named after the Greek letter π or “pi”, but the convention of representing it this way actually doesn’t come from Greece at all. It comes from ...