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In HTML and XML, a numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format: &#xhhhh;. or &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form.
Symbol Name Symbol Name Symbol Name Last Hex# HTML Hex HTML Hex HTML Hex Dec Picture Dec Picture Dec Picture CIRCLE WITH LEFT HALF BLACK UPPER HALF CIRCLE WHITE SQUARE WITH UPPER LEFT QUADRANT 0 ◐ ◠ ◰ ◐ ◠ ◰ CIRCLE WITH RIGHT HALF BLACK LOWER HALF CIRCLE WHITE SQUARE WITH LOWER LEFT QUADRANT 1 ◑ &# ...
female sign u+2642: ♂: male sign u+2660: ♠: black spade suit u+2661 ♡ white heart suit u+2662 ♢ white diamond suit u+2663: ♣: black club suit u+266d ♭ music flat sign u+266e ♮ music natural sign u+266f ♯ music sharp sign
Symbol Unicode name of the symbol [a] Similar glyphs or concepts See also ́: Acute (accent) Apostrophe, Grave, Circumflex Aldus leaf: Dingbat, Dinkus, Hedera, Index: Fleuron: ≈: Almost equal to: Tilde, Double hyphen: Approximation, Glossary of mathematical symbols, Double tilde & Ampersand: plus sign: Ligature (writing) Angle brackets
The closely related code point U+2262 ≢ NOT IDENTICAL TO (≢, ≢) is the same symbol with a slash through it, indicating the negation of its mathematical meaning. [ 1 ] In LaTeX mathematical formulas, the code \equiv produces the triple bar symbol and \not\equiv produces the negated triple bar symbol ≢ {\displaystyle \not ...
These characters allow any polynomial, chemical and certain other equations to be represented in plain text without using any form of markup like HTML or TeX. The World Wide Web Consortium and the Unicode Consortium have made recommendations on the choice between using markup and using superscript and subscript characters:
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√ (square-root symbol) Denotes square root and is read as the square root of. Rarely used in modern mathematics without a horizontal bar delimiting the width of its argument (see the next item). For example, √2. √ (radical symbol) 1. Denotes square root and is read as the square root of.