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### Pi Day

"e to the x dx dy

radical transcendental pi

secant cosine tangent sine

3.14159 2.71828 Come on folks let's integrate!!!"

~ Math Fight Song

Pi is a mathematical constant, the ratio of a circle‘s circumference to its diameter, approximately equal to 3.14159. It has been represented by the Greek letter “π” since the mid-18th century though it is also sometimes spelled out as “pi." Today, March 14, represented in date form as 3/14 or 3.14, is designated as Pi Day, a good day to impress your friends by memorizing some of the digits of this irrational number, or to just eat some pie.

A tartan for today's special date, March 14th, also known as Pi Day, for the transcendental number, starting with the digits forming today's date (in the month/day/year system) = 3.14159 ...

Recall that pi is the ratio of a circle’s circumference to its diameter.

By designer Carol A.L. Martin, the "3.14159..." tartan embodies the digits in the numbers of light-colored stripes.

Because pi is an irrational number, it repeats forever. Some mathematicians have made it a challenge to continuously calculate more and more digits of pi.

The current record for this noble endeavor is 13.3 trillion digits by Alexander Yee and Shigeru Kondo.

Click the pi to pour over the chronology of the computed numeric values of this mathematical constant.