WASHINGTON, D.C., November 10, 2015 - In 1655 the English mathematician John Wallis published a book in which he derived a formula for pi as the product of an infinite series of ratios. Now ...

A nearly 400 year-old formula for pi has been spotted in a quantum-mechanics formula for the energy states of the hydrogen atom, according to researchers in the US. Derived by English mathematician ...

How irrational is it to carve out a day for pi? Many mathematicians across the country are celebrating the transcendental number Saturday by sharing fun facts, attending events, or gorging themselves ...

Maths fans rejoice, because one of the most exciting days in the number-crunching calendar is here. March 14 is recognised annually as Pi Day, a celebration of the mathematical constant pi. Observed ...