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Plus and minus signs - Wikipedia

The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, the symbol + represents the operation of addition, which results in a sum, w...

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Definition of plus sign | PCMag

What does plus sign actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

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Addition - Wikipedia

Addition, usually denoted with the plus sign +, is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division.

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Where and When Did the Symbols "+" and "–" Originate?

The ancient Greeks expressed addition mostly by juxtaposition, but sporadically used the slash symbol "/" for addition and a semi-elliptical curve for subtraction. In the famous Egyptian Ahmes papyrus, a pair of legs ...