Pi (disambiguation)

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
P_i, 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
$Π$ $0 n$ , a set in the arithmetical hierarchy
$Π$ $1 n$ , 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
$π n (X)$ , the $n$ th homotopy group of $X$
$π$ -calculus, a process calculus
Prime-counting function or $π (x)$

Geography

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

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

People

Surname

Pi (surname) (Chinese: 皮), a Chinese surname
Bi (surname) (Chinese: 毕), romanized as Pi in Wade–Giles
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
Renzo Pi Hugarte (1934-2012), Uruguayan anthropologist

Given name

Pi de Bruijn (born 1942), Dutch architect
Pi Schwert (1892-1941), American baseball player and politician
Pi Vèriss, Dutch songwriter and composer

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 (prefix symbol), the prefix symbol of the binary unit prefix pebi
Pi, a character in Life of Pi
Pi, a member of Team Robo in Sega Soccer Slam
Pi magazine, a student publication of the University College London Union
Pi Studios, a video game developer

See also

This article is issued from Wikipedia - version of the Wednesday, January 27, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.