p (sometimes written pi) is a mathematical constant that is the ratio of any circle's circumference to its diameter. p is approximately equal to 3.14. Many formulae in mathematics, science, and engineering involve p, which makes it one of the most important mathematical constants.p is an irrational number, which means that its value cannot be expressed exactly as a fraction having integers in both the numerator and denominator (unlike 22/7). Consequently, its decimal representation never ends and never repeats.
The caravan of digits that is pi
does not stop at the edge of the page,
but runs off the table and into the air,
over the wall, a leaf, a bird's nest, the clouds, straight into the sky
Throughout the history of mathematics, there has been much effort to determine p more accurately and to understand its nature; fascination with the number has even carried over into non-mathematical culture. Perhaps because of the simplicity of its definition, p has become more entrenched in popular culture than almost any other mathematical concept.
Pi and its digital representation are often used by self-described "math geeks" for inside jokes among mathematically and technologically-minded groups. Many schools around the world observe Pi Day (March 14, from 3.14).This section of the gift shop has pi is sexy design on merchandise from tee shirts to iphone cases and covers.You can choose from pi is sexy on home ware,office products to magnets and buttons.Wall decor,pet merchandise and sesonal gifts also bear the pi is sexy design.Go have fun with this funny pi.