pi

Từ điển Máy Tính - Foldoc Dictionary

pi

1.   (character)   The greek lower-case letter P.

2.   (mathematics)   The mathematical constant that is the circumference of a circle divided by its diameter. Pi is written as the greek character pi.

Some have suggested that pi is the wrong choice and a better constant to describe the geometry of circles would have been 2*pi, for which they have proposed the name tau. Most practising mathematicians think this is silly. The xkcd comic strip proposed a compromise between pi and tau, namely 1.5*pi or "pau".

Last updated: 2013-12-09

• Từ đồng nghĩa / Synonyms:
  protease inhibitor, PI, principal investigator, private detective, private eye, private investigator, operative, shamus, sherlock