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Pi (disambiguation)
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Pi (math), [math]\pi[/math], or π, is the mathematical constant equal to a circle's circumference divided by its diameter.
Contents 
Pi may also refer to:
Letter Pi (π)
 Pi (letter), the Greek letter
 Lowercase π:
 π (film), a 1998 film directed by Darren Aronofsky
 [math]\pi(x)\,\![/math] (pi function), the primecounting function
 Pi bond
 Osmotic pressure
 A song from the Kate Bush album Aerial
 Shorthand for pion
 A men's fragrance from Givenchy
 The symbol for political life used in Boethius' Consolation of Philosophy
 Uppercase Π:
 The product symbol
 [math]\Pi(x)\,\![/math] (Pi function), the Gamma function when offset to coincide with the factorial
 [math]\pi(x)\,\![/math], the reciprocal of the Pi function
Pi as a word
 Pi (instrument)
 Pi (.hack), a fictional character from the multimedia franchise .hack//G.U.
 Pi Magazine
 Pi Recordings, a record label
 "Pi", a song from the Hard 'n Phirm album Horses and Grasses; the song ends at 3:14
 Pi, a member of Team Robo in Sega Soccer Slam
 Pi, a fictional character in the novel Life of Pi
 Pi County, county in Sichuan, China
