An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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tensor contraction
  ترنگش ِ تانسور  
terengeš-e tânsor
Fr.: contraction de tenseur  

An operation of tensor algebra that is obtained by setting unlike indices equal and summing according to a summation convention.

See also: → contraction; → tensor.