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LaTeX representation of hollow "R" symbol for real space?

Add tags Information and discussion about LaTeX's general text formatting features (e.g. bold, italic, enumerations, ...)

LaTeX representation of hollow "R" symbol for real space?

Postby clayton on Wed May 19th, 2010

In LaTeX, how do I represent the hollow "R" symbol that designates the real number space?

Thanks!
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Re: LaTeX representation of hollow "R" symbol for real space

Postby gmedina on Wed May 19th, 2010

Hi,

use \mathbb from amsfonts (loaded by amssymb):

Code: Select all  •  Open in writeLaTeX
\documentclass{report}
\usepackage{amssymb}

\begin{document}

$\mathbb{R}$

\end{document
}
1,1,2,3,5,8,13,21,34,55,89,144,233,...
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Re: LaTeX representation of hollow "R" symbol for real space

Postby clayton on Wed May 19th, 2010

Works perfectly! Thanks!
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Re: LaTeX representation of hollow "R" symbol for real space

Postby svend_tveskaeg on Mon May 24th, 2010

Just a note:
One normally represents the sets of natural numbers, integers, rational numbers, real numbers, and complex numbers by bold letters (at least on our math institut). I only use the `hollow' letters when writing on a blackboard.)

For the real numbers that is

Code: Select all  •  Open in writeLaTeX
\mathbf{R}

instead of

Code: Select all  •  Open in writeLaTeX
\mathbb{R}
``In the game of chess, you can never let your adversary see your pieces.''
-- Zapp Brannigan, Futurama (season 1, episode 4)
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Re: LaTeX representation of hollow "R" symbol for real space

Postby localghost on Mon May 24th, 2010

I don't think that your math institute sets the standard [1,2]. Just by the way. The use of blackboard letters for this representation is very common.

[1] Real number - Wikipedia, the free encyclopedia
[2] Reelle tal - Wikipedia, den frie encyklopædi
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