Pi (disambiguation)
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Look up pi, π, or Π in Wiktionary, the free dictionary. |
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:
- Pi (letter), a Greek letter
Science
- Osmotic pressure or Π
- π, a measure of nucleotide diversity
- Pi, an inorganic phosphate group
- Pi bond, a chemical bond
- Pion or π, a subatomic particle
- pI, the isoelectric point
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
- πn(X), the nth homotopy group of X
- π-calculus, a process calculus
- Prime-counting function or π(x)
Geography
- L'Alfàs del Pi, a town and municipality in Alicante, Spain
- Pi, an integrated village of Bellver de Cerdanya, Catalonia, Spain
- Pi, an ancient state during China's Zhou dynasty
- Pi County, Sichuan province, China
- Pi de Conflent, Catalan name of a commune in the Pyrénées-Orientales department, France
- Pi Islands
Music
- "π", a song by Kate Bush from Aerial
- "Pi", a song by Hard 'n Phirm from Horses and Grasses
- Pi (instrument), a generic term for a variety of double- or quadruple-reed oboes and a free-reed pipe of traditional Thai music
- Pi Recordings, a record label
- 3,14... (band)
- 3.1415 (Selina album)
People and names
- 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
- Pedro Pi (1899-1970), Spanish sailor
- Pi de Bruijn (born 1942), Dutch architect
- Pi Schwert (1892-1941), American baseball player and politician
- Pi Vèriss, Dutch songwriter and composer
- Renzo Pi Hugarte (1934-2012), Uruguayan anthropologist
- Pi (surname), a Chinese surname
- Bi (surname), romanized as Pi in Wade–Giles
Other uses
- Π, plaintiff in legal shorthand
- Pali's ISO 639-1 language code
- Pi (.hack), a fictional character from the multimedia franchise .hack//G.U.
- Pi (film), a 1998 film directed by Darren Aronofsky
- Pi, abbreviation for the binary prefix pebi
- Pi, a character in Life of Pi
- Pi, a member of Team Robo in Sega Soccer Slam
- Pi de les Tres Branques, a famous tree in Catalonia
- Pi magazine, student publication of the University College London Union
- Pi matrices, uncommon characters on a linotype machine
- Pi Studios, a video game developer
- Porto Pí Lighthouse, a lighthouse located in Palma harbor, Majorca
- Raspberry Pi, a single board computer
See also
- PI (disambiguation)
- P (disambiguation)
- Pie (disambiguation)
- Pai (disambiguation)
- Pye (disambiguation)