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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.
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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Bold notation has been largely replaced by blackboard bold, which may be encoded in LaTeX as < math > \mathbb {R} </ math >, which renders as . However, the special Unicode characters, such as U+211D (plain text ℝ or math font ℝ ) and its adjacent characters should be avoided at present, since these characters are not yet universally ...
Blackboard bold. The blackboard bold typeface is widely used for denoting the basic number systems. These systems are often also denoted by the corresponding uppercase bold letter. A clear advantage of blackboard bold is that these symbols cannot be confused with anything else.
Sets of numbers are typically bold or blackboard bold. The Greek letter forms used in mathematics are often different from those used in Greek-language text: they are designed to be used in isolation, not connected to other letters, and some use variant forms which are not normally used in current Greek typography.
MOS:B. MOS:BOLD. Boldface ( text like this) is common in articles, but is considered appropriate only for certain usages. To create it, surround the text to be boldfaced with triple apostrophes ( '''blah blah''' ).
Sample of a blackboard bold font, as produced by LaTeX with the amssymb package, at high resolution. Date: 2 December 2006: Source: en:Image:Blackboard bold.png: Author: Bryan Derksen, conversion of public domain png created by en:User:Deco: Permission (Reusing this file)
a blackboard bold R is written as \mathbb{R}. -- 89.1.57.99 08:25, 27 January 2007 (UTC) [ reply] You're right, it does seem a little strange; trawling through the history traces it to this edit, which replaced "\Bbb {R}" with "\mathbb {R}" on the grounds that "\Bbb is obsolete in amsfonts, use \mathbb instead".
Mathematical operators and symbols in Unicode. Blackboard at the Laurent Schwartz Center for Mathematics, École Polytechnique. This article contains special characters. Without proper rendering support, you may see question marks, boxes, or other symbols.
Emphasis (typography) 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.
