It’s the most wonderful time of the year—for mathematicians, anyway. Pi Day is Thursday, March 14. The relatively new holiday is a celebration of the mathematical calculation pi, or the infinite ...

It’s the most wonderful time of the year—for mathematicians, anyway. Pi Day is Friday, March 14. The relatively new holiday is a celebration of the mathematical calculation pi, or the infinite number ...

The number pi (π) appears in the most unlikely places. It can be found in circles, of course—as well as in pendulums, springs and river bends. This everyday number is linked to transcendental ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...