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SYMBL.CC update

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Sergei Asanov
2023-03-04 18:45:40 +04:00
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commit fe8c71ffd5
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loc/en/blocks/mathematical-alphanumeric-symbols.axyml
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Mathematical Alphanumeric Symbols is a Unicode block of [BLOCK:basic-latin Latin] and [BLOCK:greek-coptic Greek] letters and decimal digits that enable mathematicians to denote different notions with different letter styles (one example is blackboard bold, called "double-struck" in Unicode terminology).
Unicode now includes many such symbols (in the range U+1D400–U+1D7FF). The rationale behind this is that it enables design and usage of special mathematical characters (fonts) that include all necessary properties to differentiate from other alphanumerics, e.g. in mathematics an italic [U:1d434] can have a different meaning from a roman letter [U:1d400]. Unicode originally included a limited set of such letter forms in its [BLOCK:letterlike-symbols Letterlike Symbols block] before completing the set of Latin and Greek letter forms in this block beginning in version 3.1.
Unicode now includes many such symbols (in the range U+1D400–U+1D7FF). It enables design and usage of special mathematical characters (fonts) that include all necessary properties to differentiate from other alphanumerics. For example, in mathematics an italic [U:1D434] can have a different meaning from a roman letter [U:1d400]. Unicode originally included a limited set of such letter forms in its [BLOCK:letterlike-symbols Letterlike Symbols block] before completing the set of Latin and Greek letter forms in this block beginning in version 3.1.
Unicode expressly recommends that these characters not be used in general text as a substitute for presentational markup; the letters are specifically designed to be semantically different from each other. Unicode does not include a set of normal serif letters in the set (thus it assumes a given font is a serif by default; a sans-serif font that supports the range would thus display the standard letters and the "sans-serif" symbols identically but could not display normal serif symbols of the same).
Unicode recommends that these characters not be used in general text as a substitute for presentational markup; the letters are specifically designed to be semantically different from each other. Unicode does not include a set of normal serif letters in the set (thus it assumes a given font is a serif by default; a sans-serif font that supports the range would thus display the standard letters and the "sans-serif" symbols identically but could not display normal serif symbols of the same).
All these letter shapes may be manipulated with MathML's attribute mathvariant.