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U+2212 − MINUS SIGN; U+002D -HYPHEN-MINUS; U+FE63 ﹣ SMALL HYPHEN-MINUS; U+FE62 ﹢ SMALL PLUS SIGN; U+FF0B ＋ FULLWIDTH PLUS SIGN; U+FF0D － FULLWIDTH HYPHEN-MINUS; Alternative minus signs "÷" being used as a minus sign (not as a division sign) in an excerpt from an official Norwegian trading statement form called «Næringsoppgave 1 ...
The symbol also has a HTML entity representations of ±, ±, and ±. The rarer minus–plus sign is not generally found in legacy encodings, but is available in Unicode as U+2213 ∓ MINUS-OR-PLUS SIGN so can be used in HTML using ∓ or ∓. In TeX 'plus-or-minus' and 'minus-or-plus' symbols are denoted \pm and \mp ...
When a minus sign is used in between two numbers, it represents the binary operation of subtraction. When a minus sign is written before a single number, it represents the unary operation of yielding the additive inverse (sometimes called negation ) of the operand.
± (plus–minus sign) 1. Denotes either a plus sign or a minus sign. 2. Denotes the range of values that a measured quantity may have; for example, 10 ± 2 denotes an unknown value that lies between 8 and 12. ∓ (minus-plus sign) Used paired with ±, denotes the opposite sign; that is, + if ± is –, and – if ± is +.
The triple bar or tribar, ≡, is a symbol with multiple, context-dependent meanings indicating equivalence of two different things. Its main uses are in mathematics and logic. It has the appearance of an equals sign = with a third line.
To express the minus sign in math, U+2212 − MINUS SIGN is used instead. ^ As per Unicode 15.1.0, the degree sign is not a mathematical symbol, since it is a measurement unit symbol rather than a math symbol. Consistently, TeX packages support many non-math symbols.
In some styles, minus signs are represented using an en dash instead of a minus sign or a hyphen. This is not done in Wikipedia. In math formulas a hyphen-minus codes for a minus sign, but in text − produces the minus sign (see below). En dash ("–", MOS:ENDASH) are slightly longer than hyphens. They are used: in date ranges, such as ...
In computing, signed number representations are required to encode negative numbers in binary number systems. In mathematics, negative numbers in any base are represented by prefixing them with a minus sign ("−"). However, in RAM or CPU registers, numbers are represented only as sequences of bits, without extra symbols.
The symbol # is known variously in English-speaking regions as the number sign, hash, or pound sign. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .
The minus sign was used in 1489 by Johannes Widmann in Mercantile Arithmetic or Behende und hüpsche Rechenung auff allen Kauffmanschafft,. Widmann used the minus symbol with the plus symbol, to indicate deficit and surplus, respectively.