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Learn about the history, usage and meaning of the plus sign (+) and the minus sign (−) in mathematics and other fields. Find out how they are derived from Latin letters, how they are written in different languages and symbols, and how they are used as operators, functions and prefixes.
The plus–minus sign or plus-or-minus sign, ±, is a symbol with multiple meanings. In mathematics , it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction .
Learn about the meaning, usage and history of various symbols and signs used in typography, such as + (plus sign), ≈ (almost equal to), ́ (acute accent) and more. See the Unicode name, similar glyphs and related articles for each symbol.
Learn the meanings and uses of various mathematical symbols, such as + (plus sign), − (minus sign), × (multiplication sign), and more. See examples, syntax, and Unicode and LaTeX renderings of each symbol.
Underscore is a line drawn under a segment of text, used for various purposes such as markup, punctuation, mathematics and computing. Learn about its origin, forms, diacritics, and programming conventions in different languages and contexts.
The greater-than sign (>) is a mathematical symbol that denotes an inequality between two values. It is also used in various programming languages, shell scripts, and Unicode for different purposes.
A comprehensive table of symbols used in logic, with their names, readings, categories, explanations, and examples. Includes basic logic symbols, such as ⇒, ⇔, ¬, ∧, ∨, and ⊕, as well as symbols for propositional logic, Boolean algebra, and other fields.
Learn about the origin, meaning and typography of the degree symbol (°), which is used to represent degrees of arc, temperature, alcohol proof and other units. Find out how to type the symbol in different languages and platforms, and how to distinguish it from similar characters.