An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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equals sign
  نشانه‌ی ِ هموگ  
nešâne-ye hamug
Fr.: signe égal  

A mathematical symbol (=) that indicates equality of two expressions on each side of the sign. Same as → equality sign. The equals sign appears for the first time in Robert Recorde’s book The Whetstone of Witte published in 1557.
He was a Welsh physician and mathematician.

See also: → equal; → sign.