Originally defined as the ratio between the circumference of a circle and its diameter, pi — written as the Greek letter π — appears throughout mathematics, including in areas that are completely ...

Most people rarely deal with irrational numbers—it would be, well, irrational, as they run on forever, and representing them accurately requires an infinite amount of space. But irrational constants ...

It’s not just math wizards who look forward to Pi day, celebrated predictably on March 14 each year. Gourmands, merchants, cheapskates and a host of others may look forward to 3/14 as a chance to hawk ...