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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. The style is most commonly used to represent the number sets ( natural numbers ), ( integers ), ( rational numbers ), ( real numbers ), and ...
The blackboard bold letter style originated in the 1960s to distinguish bold letters from ordinary letters on a blackboard or using a typewriter; in professionally typeset documents, bold fonts were used for the same purpose. Since then, blackboard bold has gradually gained currency, and is now commonly used in mathematical printing to denote ...
Text formatting in citations should follow, consistently within an article, an established citation style or system. Options include either of Wikipedia's own template-based Citation Style 1 and Citation Style 2, and any other well-recognized citation system. Parameters in the citation templates should be accurate.
Uses. Reusable writing surface on which text or drawings are made. A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Example of black letter emphasis using the technique of changing fonts. In typography, emphasis is the strengthening of words in a text with a font in a different style from the rest of the text, to highlight them. [1] It is the equivalent of prosody stress in speech.
Blackboard bold. Certain objects, such as the real numbers R, are traditionally printed in boldface, or a double-struck font such as Blackboard Bold. Though both are acceptable, bolding is preferred as some browsers do not support the Unicode symbols, which lie outside the Basic Multilingual Plane. As with all such choices, the article should ...
The command \mathbb{1} fails to display the expected output because the standard Computer Modern fonts don't have a blackboard bold font defined for that symbol. The trick is to use other fonts, like mathpazo from the PSFNSS package, which include the proper symbol.
Wikipedia:Typography is a page that provides guidelines and recommendations for the use of fonts, symbols, and layout in Wikipedia articles. It covers topics such as text formatting, rendering math, manual of style, and WikiProject Mathematics. Learn how to improve the appearance and readability of Wikipedia content with typography.