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The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition , which results in a sum , while − represents subtraction , resulting in a difference . [ 1 ]
The plus and minus symbols are used to show the sign of a number. In mathematics, the sign of a real number is its property of being either positive, negative, or 0.Depending on local conventions, zero may be considered as having its own unique sign, having no sign, or having both positive and negative sign.
The plus–minus sign or plus-or-minus sign (±) and the complementary minus-or-plus sign (∓) are symbols with broadly similar multiple meanings. In mathematics , the ± sign generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction .
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Plus-or-minus can be used as INCLUSIVE disjunction or EXCLUSIVE disjunction. The article currently highlights INCLUSIVE disjunction, and only hints at EXCLUSIVE disjunction, in its discussion of the Taylor series for the sine function, but then points out that a more rigorous presentation would eliminate the need for the plus-or-minus symbol.
Mathematical Operators is a Unicode block containing characters for mathematical, logical, and set notation.. Notably absent are the plus sign (+), greater than sign (>) and less than sign (<), due to them already appearing in the Basic Latin Unicode block, and the plus-or-minus sign (±), multiplication sign (×) and obelus (÷), due to them already appearing in the Latin-1 Supplement block ...
Computations require the hyphen-minus. Sometimes the sign of a negative number constant (i.e., part of the notation of the number itself) is written "¯" while the unary and binary minus operator is the hyphen-minus "-". I removed the above section on the following grounds: Computations require the hyphen-minus.