An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 1 Search : necessary and sufficient conditions
necessary and sufficient conditions
  بوتارهای ِ بایسته و بسنده   
butârhâ-ye bâyesté o basandé

Fr.: conditions nécessaire et suffisante   

If event A must occur for event B to occur, then it is said that A is → necessary for B. If event A may cause B but there could be some other cause as well, then it is said that A is sufficient to cause B. See also → if and only if (iff).

→ necessary; → and; → sufficient; → condition.