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Mathematical operators and symbols are in multiple Unicode blocks. Some of these blocks are dedicated to, or primarily contain, mathematical characters while others are a mix of mathematical and non-mathematical characters. This article covers all Unicode characters with a derived property of "Math". [2][3]
Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...
Nonprinting 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 nonprintable characters in word processors are pilcrow, space, nonbreaking space, tab character etc. [1][2]
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.
Without proper rendering support, you may see question marks, boxes, or other symbols. 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.
There was no symbol or concept of zero as a placeholder in Egyptian numeration and zero was not used in calculations. [4] However, the symbol nefer (nfr𓄤, "good", "complete", "beautiful") was apparently also used for two numeric purposes: [5] in a papyrus listing the court expenses, c. 1740 BC, it indicated a zero balance;
In the plain TeX markup language, the ampersand is used to mark tabstops. The ampersand itself can be applied in TeX with \&. The Computer Modern fonts replace it with an "E.T." symbol in the cmti# (text italic) fonts, so it can be entered as {\it\&} in running text when using the default (Computer Modern) fonts.
Period-after-opening symbol (on cosmetics as 6M, 12M, 18M, etc.) U+2602 ☂ UMBRELLA - keep dry. U+2614 ☔ UMBRELLA WITH RAIN DROPS - keep dry. Japanese postal mark. ℮, the European estimated sign U+212E. Inventory tracking symbols. Barcode such as a Universal Product Code. QR code.