Mathematical Operators is a
Unicode block
A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...
containing characters for mathematical, logical, and set notation.
Notably absent are the
plus sign
The plus and minus signs, and , are mathematical symbols used to represent the notions of positive and negative, respectively. In addition, represents the operation of addition, which results in a sum, while represents subtraction, resul ...
(+),
greater than sign
The greater-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the right, , has been found in documents dated as far back as the 1 ...
(>) and
less than sign
The less-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the left, , has been found in documents dated as far back as the 1560s ...
(<), due to them already appearing in the
Basic Latin Unicode block, and the
plus-or-minus sign (±),
multiplication sign
The multiplication sign, also known as the times sign or the dimension sign, is the symbol , used in mathematics to denote the multiplication operation and its resulting product. While similar to a lowercase X (), the form is properly a fou ...
(×) and
obelus (÷), due to them already appearing in the
Latin-1 Supplement
The Latin-1 Supplement (also called C1 Controls and Latin-1 Supplement) is the second Unicode block in the Unicode standard. It encodes the upper range of ISO 8859-1: 80 (U+0080) - FF (U+00FF). C1 Controls (0080–009F) are not graphic. Thi ...
block, although a distinct minus sign (−) is included, differing from the Basic Latin
hyphen-minus
The hyphen-minus is the most commonly used type of hyphen, widely used in digital documents. It is the only character that looks like a minus sign or a dash in many character sets such as ASCII or on most keyboards, so it is also used as suc ...
(-).
Block
Variation sequences
The Mathematical Operators block has sixteen variation sequences defined for
standardized variants.
They use (VS01) to denote variant symbols (depending on the font):
History
The following Unicode-related documents record the purpose and process of defining specific characters in the Mathematical Operators block:
See also
*
Mathematical operators and symbols in Unicode
The Unicode Standard encodes almost all standard characters used in mathematics.
Unicode Technical Report #25 provides comprehensive information about the character repertoire, their properties, and guidelines for implementation.
Mathematical op ...
*
Supplemental Mathematical Operators
References
{{Mathematical symbols notation language
Unicode blocks
Mathematical symbols