Pi (disambiguation)
Pi or 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), in 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 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
- Pi, 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 - ΠP
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
- πn(X), the nth homotopy group of X
- π-calculus, a process calculus
- Prime-counting function or π(x)
- , 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)
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