mathbb generates strange characters for numbers and greek letters

Question

I'm simply compiling this code

\documentclass{article}
\usepackage{amssymb}             % AMS Math

\begin{document}

\begin{equation}\label{eee}
\mathbb{R} \mathbb{A}  \mathbb{1}  \mathbb{\Omega} 
\end{equation}

\end{document}

The output is really strange. What is going on with amssymb package?

Don't use \mathbb for numbers and greek. It is a command only for letters. — Ulrike Fischer, Feb 05 '16 at 16:24
then how people usually type this $\mathbb{1}$. I've seen may times in the literature — Ehsan, Feb 05 '16 at 16:29
Check the symbol list http://www.ctan.org/pkg/comprehensive (Table 299: Math Alphabets). — Ulrike Fischer, Feb 05 '16 at 16:35
Thanks for referencing the table. using "amssymb" I can generate nice blackboard bold letters such as $\mathbb{R}$. But this package produces strange characters for greek letters, as mentioned in my post above. However, if I use "mathbbol", instead of amssymb, it does generate blackboard bold greek letters. But the problem is the letters such as $\mathbb{R}$ are not as nice as before. — Ehsan, Feb 05 '16 at 16:53
you can declare both alphabets and use ams for letters and a different one for digits. — David Carlisle, Feb 05 '16 at 18:33

David Carlisle · Answer 1 · 2016-03-06T01:31:50.977

6

You can declare both fonts, I called them \amsmathbb and \mathbb here:

\documentclass{article}

\usepackage{mathbbol}
\usepackage{amssymb}             % AMS Math

\DeclareSymbolFontAlphabet{\amsmathbb}{AMSb}%

\begin{document}

\begin{equation}\label{eee}
\amsmathbb{R} \amsmathbb{A}  \mathbb{1}  \mathbb{\Omega} 
\end{equation}

\end{document}

edited Mar 06 '16 at 01:31

answered Mar 06 '16 at 00:50

David Carlisle

757,742

2

This is not working, I compiled your code exactly and the 1 and Ω came out as normal fonts. – Yan King Yin Apr 19 '19 at 06:13
@YanKingYin it should work or you get an error about fonts not being installed, if you can't get it working ask a new question and show your log file from the above test file. – David Carlisle Apr 19 '19 at 07:16

score 3 · Answer 2 · answered Jun 24 '21 at 21:16

3

I recommend to use the following format.

\documentclass{article}
\usepackage{bbold}
\begin{document}
 \begin{itemize}
    \item $\mathbb{1}_X$
    \item $\mathbb{\Omega}$
    \item $\mathbb{\Delta}$
\end{itemize}
\end{document}

answered Jun 24 '21 at 21:16

akr_

159

why do u recom? – Rémy Hosseinkhan Boucher Dec 08 '23 at 01:40

mathbb generates strange characters for numbers and greek letters

2 Answers2

Linked