The equals sign or equality sign (=) is a mathematical symbol used to indicate equality. It was invented in 1557 by Robert Recorde. The equals sign is placed between two quantities that have the same value, as in an equation. It is assigned to the Unicode and ASCII character 003D in hexadecimal, 0061 in decimal. ==History== The etymology of the wo...
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http://en.wikipedia.org/wiki/Equals_sign
[
n] - a sign indicating that the quantities on either side are equal
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http://www.webdictionary.co.uk/definition.php?query=equals%20sign
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