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Blackboard bold is a style of writing bold symbols on a blackboard by doubling certain strokes, commonly used in mathematical lectures, and the derived style of typeface used in printed mathematical texts.
• Bold font. • Italicize font. • Underline words. • Choose a text color. • Choose a background text color. • Change your emails format. • Add emoticons. • Find and replace text, clear formatting, or add the time. • Insert a saved image. • Insert a hyperlink.
Astronomical symbols – Symbols in astronomy; Chemical symbol – Abbreviations used in chemistry; Chinese punctuation – Punctuation used with Chinese characters; Currency symbol – Symbol used to represent a monetary currency's name; Diacritic – Modifier mark added to a letter (accent marks etc.)
Mathematical Alphanumeric Symbols is a Unicode block comprising styled forms of Latin and Greek letters and decimal digits that enable mathematicians to denote different notions with different letter styles. The letters in various fonts often have specific, fixed meanings in particular areas of mathematics.
In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). The format is the same as for any entity reference: &name;
Bold text is stylistically offset from other text without conveying extra importance. The most common use of boldface is to highlight the article title, and often synonyms, in the lead section. Do not use bold text for emphasis. Use ''' to open and close bold text.
Some things remain in upright form regardless of the surrounding text Bold-face variables (such as vectors) and structures (such as Q, the rational numbers) Letters with an arrow on top for vectors; Symbols for chemical elements and compounds such as HCl; Symbols for units of measure such as kg, ft/s
Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.