The earliest known textually evidenced approximations of pi date from around 1900 BCE; they are 25/8 (Babylonia) and 256/81 (Egypt), both within 1% of the true value.
The Greek letter pi was first used to represent the ratio of the circumference of a circle to its diameter in 1709 by mathematician William Jones.
A photograph of the Greek letter pi, created as a large stone mosaic embedded in
.... Liu later invented a faster method of calculating π and obtained a value of ...
In 1706 a little-known mathematics teacher William Jones first used a symbol to
represent the platonic concept of pi, an ideal that in numerical terms can be ...
Mar 14, 2015 ... Pi Day 2015: meet the man who invented π. Gareth Ffowc Roberts. Anglesey-
born William Jones was the first person to use the Greek letter π ...
May 17, 1999 ... Succinctly, pi--which is written as the Greek letter for p, or --is the ratio of the
circumference of any circle to the diameter of that circle.
But did you ever wonder where PI came from? Did somebody make it up? Was it
invented? Where does it come from!? PI is a truly magical number! The symbol ...
The History of Pi. David Wilson History of Mathematics Rutgers, Spring 2000.
Throughout the history of mathematics, one of the most enduring challenges has
Date: 04/10/2003 at 05:49:07 From: Katharine Subject: Pi - why was it even
invented?? Dr. Math, I don't understand why pi was invented in the first place. I
Sep 17, 2002 ... Dear Straight Dope: Hey for my Algerbra class, our teacher told us that we could
get extra credit if we told him Who Invented Pi (mathmatically ...
Pi has been known for almost 4000 years—but even if we calculated the number
of seconds in those 4000 years and calculated pi to that number of places, we ...