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The first cell in each row gives a symbol; The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.);
The following table lists many specialized symbols commonly used in modern mathematics, ordered by their introduction date. The table can also be ordered alphabetically by clicking on the relevant header title.
Anadrome: a word or phrase that reads as a different word or phrase in reverse; Apronym: an acronym that is also a phrase pertaining to the original meaning RAS syndrome: repetition of a word by using it both as a word alone and as a part of the acronym; Recursive acronym: an acronym that has the acronym itself as one of its components
In Irish and Scottish Gaelic, the character ⁊ (U+204A ⁊ TIRONIAN SIGN ET) is used in place of the ampersand. This character is a survival of Tironian notes, a medieval shorthand system. This character is known as the Tironian Et in English, the agus in Irish, and the agusan in Scottish Gaelic.
The word symbol derives from the late Middle French masculine noun symbole, which appeared around 1380 in a theological sense signifying a formula used in the Roman Catholic Church as a sort of synonym for 'the credo'; by extension in the early Renaissance it came to mean 'a maxim' or 'the external sign of a sacrament'; these meanings were lost in secular contexts.
The asterisk (/ ˈ æ s t ər ɪ s k / *), from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star", [1] [2] is a typographical symbol. It is so called because it resembles a conventional image of a heraldic star.
The question mark is used in ASCII renderings of the International Phonetic Alphabet, such as SAMPA, in place of the glottal stop symbol, ʔ, (which resembles "?" without the dot), and corresponds to Unicode code point U+0294 ʔ LATIN LETTER GLOTTAL STOP. In computer programming, the symbol "?" has a special meaning in many programming languages.
Non-printing characters or formatting marks are characters for content designing in word processors, which are not displayed at printing. It is also possible to customize their display on the monitor. The most common non-printable characters in word processors are pilcrow, space, non-breaking space, tab character etc. [1] [2]