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The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics. Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, [1] and the LaTeX symbol.
In logical argument and mathematical proof, the therefore sign, ∴, is generally used before a logical consequence, such as the conclusion of a syllogism. The symbol consists of three dots placed in an upright triangle and is read therefore. While it is not generally used in formal writing, it is used in mathematics and shorthand.
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.
An extract and symbol key from Kenelm Digby's A Choice Collection of Rare Secrets, 1682 The alchemical magnum opus was sometimes expressed as a series of chemical operations. In cases where these numbered twelve, each could be assigned one of the Zodiac signs as a form of cryptography.
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The 'figure' must be black on a white symbol field, and never the reverse, white symbols on a black field. [ 2 ] Symbols were determined to be typically legible from approximately 30 feet (9.1 m) with a 3 inches (76 mm) symbol to 155 feet (47 m) with a 12 inches (300 mm) symbol.
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Signage is the design or use of signs and symbols to communicate a message. [1] [2] Signage also means signs collectively or being considered as a group. [3] The term signage is documented to have been popularized in 1975 to 1980. [2] Signs are any kind of visual graphics created to display information to