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The not equal sign is a symbol that is used to indicate that the values on either side are not the same. It is also known as an inequality symbol which means that one of the values is less than or greater than the other.

The not equal sign was created in 1637 by Robert Recorde. He created it to solve a problem with algebra and he called it “the maugree letter, or lesse letter.” In his text, he wrote “is not equal to.”

As a symbol, the equals sign is used to indicate that two quantities are the same. This is most commonly seen in mathematics, where it is often used to denote equality between two expressions.

The equals sign derives from an ancient Greek letter called “sigma”, which was used as an abbreviation for “is equal to”. The symbol was encoded into Unicode in 1974 and added to ASCII in 1985.

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