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List of mathematical constants (typically letters and compound symbols) Glossary of mathematical symbols; List of physical constants (typically letters and compound symbols) List of common physics notations (typically letters used as variable names in equations) Rod of Asclepius / Caduceus as a symbol of medicine
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.);
HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.
Phonetic pitch and phonemic tone may be indicated by either diacritics placed over the nucleus of the syllable – e.g., high-pitch é – or by Chao tone letters placed either before or after the word or syllable. There are three graphic variants of the tone letters: with or without a stave, and facing left or facing right from the stave.
Such an extension at the bottom of a letter is called a tail. It may be specified as left or right depending on which direction it turns, as in ɳ right-tail n , ɻ right-tail turned r , ɲ left-tail n , ʐ tail z (or just retroflex z ), etc. Note that ŋ is called eng or engma , ɱ meng , and ꜧ heng .
The Phonetic Symbol Guide is a book by Geoffrey Pullum and William Ladusaw that explains the histories and uses of the symbols of various phonetic transcription conventions. It was published in 1986, with a second edition in 1996, by the University of Chicago Press .
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radical symbol (for nth root) 1629 Albert Girard < > ... Use of the letter x for an independent variable or unknown value. See History of algebra: The symbol x.