Definitions for blackboard bold
black·board bold

WiktionaryRate this definition:0.0 / 0 votes

1. blackboard boldnoun

   A typeface used for representing bold characters, mainly used in mathematical texts, that allows these characters to be easily distinguished from non-bold characters when written.

WikipediaRate this definition:0.0 / 0 votes

1. Blackboard bold

   Blackboard bold is a typeface style that is often used for certain symbols in mathematical texts, in which certain lines of the symbol (usually vertical or near-vertical lines) are doubled. The symbols usually denote number sets. One way of producing blackboard bold is to double-strike a character with a small offset on a typewriter. Thus, they are also referred to as double struck.In typography, such a font with characters that are not solid is called an "inline", "shaded", or "tooled" font.

WikidataRate this definition:0.0 / 0 votes

1. Blackboard bold

   Blackboard bold is a typeface style that is often used for certain symbols in mathematical texts, in which certain lines of the symbol are doubled. The symbols usually denote number sets. Blackboard bold symbols are also referred to as double struck, although they cannot actually be produced by double striking on a typewriter. The Chicago Manual of Style in 1993 advises: "blackboard bold should be confined to the classroom" whereas in 2003 it states that "open-faced symbols are reserved for familiar systems of numbers". In some texts these symbols are simply shown in bold type: blackboard bold in fact originated from the attempt to write bold letters on blackboards in a way that clearly differentiated them from non-bold letters, and then made its way back in print form as a separate style from ordinary bold, possibly starting with the original 1965 edition of Gunning and Rossi's textbook on complex analysis. Some mathematicians, therefore, do not recognize blackboard bold as a separate style from bold: Jean-Pierre Serre, for example, has publicly inveighed against the use of "blackboard bold" anywhere other than on a blackboard, and uses double-struck letters when writing bold on the blackboard, whereas his published works consistently use ordinary bold for the same symbols. Donald Knuth also advises against the use of blackboard bold in print.

How to pronounce blackboard bold?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say blackboard bold in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of blackboard bold in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of blackboard bold in Pythagorean Numerology is: 3

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Blackboard_Bold
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Blackboard_Bold
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=blackboard bold