Pi (disambiguation)

Pi (π) is a mathematical constant equal to a circle's circumference divided by its diameter.

Pi, π or Π may also refer to:

Language and typography

• Pi (letter), the 17th letter of the Greek alphabet
• Pi characters, uncommon characters in typesetting
• Pi font, a term for some kinds of dingbat fonts
• Pali, an Indo-Aryan language (ISO 639-1 code: pi)

Places

• Pi (state), an ancient state during China's Zhou dynasty
• Pi, Catalonia, a village of Bellver de Cerdanya, Spain
• Pi County, Sichuan province, China
• Pi Islands, Palmer Archipelago, Antarctica

People

Given name

• Pi de Bruijn (born 1942), Dutch architect
• Pi O or П. O. (born 1951), Greek-Australian anarchist poet
• Pi Schwert (1892–1941), American baseball player and politician
• Pi Vèriss, Dutch songwriter and composer

Surname

• Bi (surname) (Chinese: 毕), romanized as Pi in Wade–Giles
• Pi (surname) (Chinese: 皮), a Chinese surname
• Enric Pi (born 1983), Catalan footballer
• Francesc Pi i Margall (1824–1901), Catalan politician
• Jordi Sabater Pi (1922–2009), Catalan primatologist and ethologist
• Meritxell Mateu i Pi (born 1966), Andorran diplomat
• Ot Pi (born 1970), Catalan mountain bike trials rider
• Pedro Pi (1899–1970), Spanish sailor
• Renzo Pi Hugarte (1934–2012), Uruguayan anthropologist

Arts, entertainment, and media

Fictional characters

• Pi (.hack), in the multimedia franchise .hack//G.U.
• Pi, in both:
  • Life of Pi, a 2001 novel, and
  • Life of Pi (film), a 2012 adaptation
• Pi, a member of Team Robo in Sega Soccer Slam
• Pi, in the 2006 animated film Shark Bait and the 2012 sequel The Reef 2: High Tide

Music

• Pi (instrument), several traditional Thai reed instruments
• "π", a song by Kate Bush from Aerial
• "Pi", a song by Hard 'n Phirm from Horses and Grasses
• "Pi", a song by J. Cole from Might Delete Later
• Pi Recordings, a record label

Other arts, entertainment, and media

• Pi (film), a 1998 film directed by Darren Aronofsky
• P.I. (TV series), a 2017 Singaporean 1series
• Pi magazine, a student publication of the University College London Union
• Pi Studios, a video game developer

Science and mathematics

Chemistry and biochemistry

• π, a measure of nucleotide diversity
• Π or Osmotic pressure
• P_i, an inorganic phosphate group
• Isoelectric point (pI), the pH at which a particular molecule carries no net electrical charge in the statistical mean
• Pi bond, a chemical bond

Logic and computer science

• Π, the symbol for maxterm notation in Karnaugh mapping
• Raspberry Pi, a single-board computer

Mathematics

• Π, a glyph representing the product of a sequence of terms
• Π⁰
  _n, a set in the arithmetical hierarchy
• Π¹
  _n, a set in the analytical hierarchy
• Π^P
  _i, a set in the polynomial hierarchy
• Π(x) (Pi function), the Gamma function when offset to coincide with the factorial
• Π(n, k), the complete elliptic integral of the third kind
• π_n(X), the nth homotopy group of X
• π-calculus, a process calculus
• Prime-counting function or π(x)
• ${\displaystyle \pi }$, the population proportion in statistics

Physics

• Pion or π, a subatomic particle

Other uses

• Pi (prefix symbol), or pebi, in computing
• Π, for plaintiff, in legal shorthand
• Π, stands for Pierikos F.C. kit logo
• Pi Day, March 14 (3/14 in the US)
• Principal investigator, a lead researcher
• Private investigator

See also

• PI (disambiguation)
• All pages with titles beginning with π
• All pages with titles containing π
• All pages with titles beginning with Pi
• All pages with titles containing Pi
• P (disambiguation)
• Pai (disambiguation)
• Pie (disambiguation)
• Pye (disambiguation)

1. PI
2. Pi function
3. Magnum, P.I. (disambiguation)
4. Pe
5. Kappa Alpha Pi
6. Pie (disambiguation)
7. Liu Pi
8. PIS
9. P1
10. Delta Alpha Pi
11. Piy
12. PIB
13. PIP2 (disambiguation)
14. Piscine
15. 22/7
16. Orange juice (disambiguation)
17. Frank Gannon (disambiguation)
18. Beta Theta Pi Fraternity House
19. Pip
20. Pineapple (disambiguation)