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## Extra! Pi Lint

The number pi (pronounced "pi" is one of those "Hall of Fame" numbers that fascinates students, teachers, and the general public. Every column in his week's issue of the website contains information about pi. Please enjoy and use it.

The one thing missing is the "oddball" side of pi. For example, on the mathematical side, do you know that if you explore circles in taxicab geometry environments, pi can take on values such as exactly 4 or 3 (depending on the lattice grid configuration).

If you have not disciovered the web site Pi Search, , you might want to check it out. You can put in your birthdate (e.g. 7/12/1970 becomes "07121970")or any number sequence (up to 120 digits long) and it will tell you where that digit sequence occurs in the decimal expansion of pi. Amazing... that it can be done...and that anyone does it!

Or, relative to pi in the media, have you been able to sit through the movie Pi as released in 1998. Have you read science fiction revolving around pi, such as Greg Bear's Eon, Terry Pratchett's Going Postal, Arthur C. Clarke's Childhood's End, or Bob Shaw's trilogy starting with The Ragged Astronauts?

And finally, the weird and the whacky aspects of pi. Have you heard Kate Bush's rendition of "π" on the album Aerial (2005), in which she sings π to its 137th decimal place (but unexplicably omits the 79th through 100th decimal places)? Or, have you heard the band Hard 'n Phirm's song "π" on their album Horses and Grasses, which lasts exactly 3 minutes, 14 seconds.

Pi...we love you!