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5 definitions found
 for mu
From The Collaborative International Dictionary of English v.0.48 :

  mu \mu\ n. (m[=u])
     The 12th letter of the Greek alphabet ([mu], [MU]).
     [WordNet 1.5]

From WordNet (r) 3.0 (2006) :

  mu
      n 1: the 12th letter of the Greek alphabet

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  mu
   /moo/
  
      The correct answer to the classic trick question ?Have you stopped beating
      your wife yet??. Assuming that you have no wife or you have never beaten
      your wife, the answer ?yes? is wrong because it implies that you used to
      beat your wife and then stopped, but ?no? is worse because it suggests that
      you have one and are still beating her. According to various Discordians
      and Douglas Hofstadter the correct answer is usually ?mu?, a Japanese word
      alleged to mean ?Your question cannot be answered because it depends on
      incorrect assumptions?. Hackers tend to be sensitive to logical
      inadequacies in language, and many have adopted this suggestion with
      enthusiasm. The word ?mu? is actually from Chinese, meaning ?nothing?; it
      is used in mainstream Japanese in that sense. In Chinese it can also mean ?
      have not? (as in ?I have not done it?), or ?lack of?, which may or may not
      be a definite, complete 'nothing'). Native speakers of Japanese do not
      recognize the Discordian question-denying use, which almost certainly
      derives from overgeneralization of the answer in the following well-known
      Rinzai Zen koan:
  
          A monk asked Joshu, ?Does a dog have the Buddha nature?? Joshu
          retorted, ?Mu!?
  
      See also has the X nature, Some AI Koans, and Douglas Hofstadter's G?del,
      Escher, Bach: An Eternal Golden Braid (pointer in the Bibliography in
      Appendix C.
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  mu
  
     1.  The country code for Mauritius.
  
     2.  /moo/ The correct answer to the classic trick
     question "Have you stopped beating your wife yet?".  Assuming
     that you have no wife or you have never beaten your wife, the
     answer "yes" is wrong because it implies that you used to beat
     your wife and then stopped, but "no" is worse because it
     suggests that you have one and are still beating her.
     According to various Discordians and Douglas Hofstadter the
     correct answer is usually "mu", a Japanese word alleged to
     mean "Your question cannot be answered because it depends on
     incorrect assumptions".
  
     Hackers tend to be sensitive to logical inadequacies in
     language, and many have adopted this suggestion with
     enthusiasm.  The word "mu" is actually from Chinese, meaning
     "nothing"; it is used in mainstream Japanese in that sense,
     but native speakers do not recognise the Discordian
     question-denying use.  It almost certainly derives from
     overgeneralisation of the answer in the following well-known
     Rinzei Zen teaching riddle:
  
     A monk asked Joshu, "Does a dog have the Buddha nature?"
     Joshu retorted, "Mu!"
  
     See also has the X nature, AI Koan.
  
     [Douglas Hofstadter, "Gödel, Escher, Bach: An Eternal Golden
     Braid"].
  
     [{Jargon File]
  
     (2000-11-22)
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  Mu
  
      (Greek letter).
  
     1.  /micro/ prefix denoting division by 10^6, e.g. mu m
     (micrometre, a millionth part of a metre).  Sometimes written
     as a 'u', the ASCII character nearest in appearance.
  
     2.  /myoo/ In the theory of functions, mu x . E
     denotes the least value of x for which E = x, i.e. the least
     fixed point of the function \ x . E.  The recursive
     function mu f . H f satisfies (and is defined by) the equation
  
     	mu f . H f = H (mu f . H f)
  
     An alternative notation for the same function is
  
     	fix H = H (fix H)
  
     See fixed point combinator.
  
     3.  multiple value.
  
     [{Jargon File]
  
     (1995-10-30)
  

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