Plus Sign
The plus sign is a binary operator that indicates addition, as in 2 + 3 = 5. It can also serve as a unary operator that leaves its operand unchanged (+x means the same as x). This notation may be used when it is desired to emphasise the positiveness of a number, especially when contrasting with the negative (+5 versus −5).
The plus sign can also indicate many other operations, depending on the mathematical system under consideration. Many algebraic structures have some operation which is called, or equivalent to, addition. Moreover, the symbolism has been extended to very different operations. Plus can mean:
- exclusive or (usually written ⊕): 1 + 1 = 0, 1 + 0 = 1
- logical disjunction (usually written ∨): 1 + 1 = 1, 1 + 0 = 1
Read more about this topic: Plus And Minus Signs
Famous quotes containing the word sign:
“The first sign of corruption in a society that is still alive is that the end justifies the means.”
—Georges Bernanos (1888–1948)
“The test of an adventure is that when you’re in the middle of it, you say to yourself, “Oh, now I’ve got myself into an awful mess; I wish I were sitting quietly at home.” And the sign that something’s wrong with you is when you sit quietly at home wishing you were out having lots of adventure.”
—Thornton Wilder (1897–1975)