{bmatrix} and arrays
Kwaj
placed next to each other in my document. I am currently using the {bmatrix}
command but I find in a 2 column document, a set of 4 matrices ends up
taking up the entire column width. This is mainly due to there being large
gaps in between the columns in each matrix.
I am looking at a similarly formatted document in which the individuals
matrices are much smaller, such that six (4*3) matrices can be placed in a
single column of a two column document.
any ideas on how to fix this?
- Kwaj
Christian Ludwig
Looking for a new document? Or for a possiblility to get the matrices
smaller?
For the latter case: try \arraycolsep. Here a example with really litte
space (0pt) between the columns:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\arraycolsep0pt \begin{bmatrix}
0&1\cr
2&3\cr
\end{bmatrix}
\]
\end{document}
Bye
C. Ludwig
Enrico Gregorio
I don't doubt that the construction you proposed is working.
However it is not using LaTeX syntax; and, when someone who is not
expert in LaTeX starts using \cr, every bad thing can happen.
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\setlength{\arraycolsep}{0pt}
\begin{bmatrix}
0&1\\
2&3
\end{bmatrix}
\]
\end{document}
Ciao
Enrico
Christian Ludwig
>>\documentclass{article}
>>\usepackage{amsmath}
>>
>>\begin{document}
>>
>>\[
>>\arraycolsep0pt \begin{bmatrix}
>>0&1\cr
>>2&3\cr
>>\end{bmatrix}
>>\]
>>
>>\end{document}
>
>
> I don't doubt that the construction you proposed is working.
> However it is not using LaTeX syntax; and, when someone who is not
> expert in LaTeX starts using \cr, every bad thing can happen.
>
> \documentclass{article}
> \usepackage{amsmath}
>
> \begin{document}
>
> \[
> \setlength{\arraycolsep}{0pt}
> \begin{bmatrix}
> 0&1\\
> 2&3
> \end{bmatrix}
> \]
>
> \end{document}
>
Thank you for your remark. You are absolutely right. Sorry for not using
LaTeX conventions/syntax. I'll try to improve.
Just for info: Using \\ can give you some effects you don't like.
1. example: in the above case \\ expands to ${}${}\cr. Great!? And so
you get an extra \mathon \hbox(0.0+0.0)x0.0 \mathoff in your column. Of
course, because it has width 0pt you can't see it, but it's there.
2. example: Some days ago in de.comp.text.tex we had the question, why
using \\[10pt] inhibits hyphenation of the last word in the last column
in a tabular.
(Because an \vrule with width 0pt is inserted at the end of the last
word; using \cr\noalign{\vskip10pt} solved the problem in this case.)
Bye
C. Ludwig
Enrico Gregorio
> > [SNIP]
> > \documentclass{article}
> > \usepackage{amsmath}
> >
> > \begin{document}
> >
> > \[
> > \setlength{\arraycolsep}{0pt}
> > \begin{bmatrix}
> > 0&1\\
> > 2&3
> > \end{bmatrix}
> > \]
> >
> > \end{document}
> >
>
> Thank you for your remark. You are absolutely right. Sorry for not using
> LaTeX conventions/syntax. I'll try to improve.
>
>
> Just for info: Using \\ can give you some effects you don't like.
>
> 1. example: in the above case \\ expands to ${}${}\cr. Great!? And so
> you get an extra \mathon \hbox(0.0+0.0)x0.0 \mathoff in your column. Of
> course, because it has width 0pt you can't see it, but it's there.
>
> 2. example: Some days ago in de.comp.text.tex we had the question, why
> using \\[10pt] inhibits hyphenation of the last word in the last column
> in a tabular.
> (Because an \vrule with width 0pt is inserted at the end of the last
> word; using \cr\noalign{\vskip10pt} solved the problem in this case.)
Those are `features', I guess ;-)
The definition of \\ inside an array has to cope with the
possibility of having * or [<dimen>] after it, with all the
problems concerning the balance of braces (\ifnum 0=`{\fi...).
Lamport's solution is not the best, it seems. Maybe LaTeX gurus
can offer a different point of view on the subject.
Anyway, it is best not to burden novices with such subtleties;
I think you'll agree on this.
Ciao
Enrico
Lars
> 2. example: Some days ago in de.comp.text.tex we had the question, why
> using \\[10pt] inhibits hyphenation of the last word in the last
> column in a tabular.
> (Because an \vrule with width 0pt is inserted at the end of the last
> word; using \cr\noalign{\vskip10pt} solved the problem in this case.)
Perhaps using \tabularnewline would be the proper thing (or was that
only with booktab?).
L.