nécessaire et suffisant

Discussion in 'French-English Vocabulary / Vocabulaire Français-Anglais' started by Badaboum, Mar 28, 2012.

  1. Badaboum New Member

    Belgium
    French
    Hello,

    I am looking for a translation of the expression "nécessaire et suffisant" in the field of mathematics.
    Do you think that "necessary and sufficient" has the same meaning in english?
    I want to say that I take the "very exact" amount of measures to solve a problem. One more would be too much, one less is not enough.

    Thanks a lot!
     
  2. Mauricet Senior Member

    near Grenoble
    French - France
    Très exactement.
     
  3. Keith Bradford

    Keith Bradford Senior Member

    Brittany, NW France
    English (Midlands UK)
    This is a very ancient philosophical expression. Briefly there are necessary causes (which may not be sufficient) and sufficient causes (which may not be necessary).

    Example: to make tea, tea+water are necessary and sufficient. Tea+water+milk are sufficient but the milk is not necessary. Water is necessary but not sufficient without the tea...
     

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