[Tex/LaTex] Notation for a sample space

math-mode

I would like to write the sample space for rolling two fair six-sided dice once. It would look like this:

S = {(1, 1), (1, 2), ..., (1, 6),
     (2, 1), (2, 2), ..., (2, 6),
     ...      ...    ...   ...
     (6, 1), (6, 2), ..., (6, 6)}

where that third line of "…" is actually vertical.

How can I do this in LaTeX?

Best Answer

One way you can typeset that is to use align:

If you are willing to do a bit more work you could use alignat that produces better output:

Code:

\documentclass{article}
\usepackage{amsmath}
\usepackage{calc}
\usepackage{xcolor}\pagecolor{white}

\newcommand*{\CenterVdots}{\makebox[\widthof{(0,0),}][c]{\vdots}}

\begin{document}
\begin{align*}
    S = \{&(1, 1), (1, 2), \dots, (1, 6), \\
          &(2, 1), (2, 2), \dots, (2, 6), \\
          &\CenterVdots  \CenterVdots  \CenterVdots \CenterVdots \\
          &(6, 1), (6, 2), \dots, (6, 6) \}
\end{align*}
\end{document}

Code

\documentclass{article}
\usepackage{amsmath}
\usepackage{calc}
\usepackage{xcolor}\pagecolor{white}

\newcommand*{\CenterVdots}[1][(0,0),]{\makebox[\widthof{#1}][c]{\vdots}}

\begin{document}
\begin{alignat*}{5}
    S = \{&(1, 1), &&\,(1, 2), &&\,\dots, &&\,(1, 6), \\
          &(2, 1), &&\,(2, 2), &&\,\dots, &&\,(2, 6), \\
          &\CenterVdots  &&\,\CenterVdots  &&\,\CenterVdots[\dots] &&\,\CenterVdots \\
          &(6, 1), &&\,(6, 2), &&\,\dots, &&\,(6, 6) \}
\end{alignat*}
\end{document}

Related Solutions

[Tex/LaTex] Increasing vertical space after equation in paragraph with short previous line

You seem to want that \belowdisplayshortskip is set equal to \belowdisplayskip; the former is used if the line above the display is “short”. The parameters are set in \normalsize (and also in \small and \footnotesize). Just append the appropriate declaration.

\documentclass{article}
\usepackage{etoolbox}
\appto\normalsize{\belowdisplayshortskip=\belowdisplayskip}
% the following two are not strictly necessary
\appto\small{\belowdisplayshortskip=\belowdisplayskip}
\appto\footnotesize{\belowdisplayshortskip=\belowdisplayskip}

\begin{document}

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The quick brown fox jumps over the lazy dog.
The quick brown fox jumps over the lazy dog.
The quick brown fox jumps over the lazy dog.
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\begin{equation}
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\end{equation}
The paragraph continues here.
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The quick brown fox jumps over the lazy dog.
The quick brown fox jumps over the lazy dog.
The quick brown fox jumps over the lazy dog.
The quick brown fox jumps.
\begin{equation}
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\end{equation}
The paragraph continues here.
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enter image description here

[Tex/LaTex] Smashoperator for the vertical space

You can use \smash[b]:

\documentclass{scrbook}
\usepackage{amsmath}

\begin{document}
\begin{alignat}{2}
\smash[b]{\sum_{m \in M}}\, x_m &= 1\quad && , \forall m \in M \colon a \neq b ; \notag \\
                                &         && \phantom{,{}}   c \neq d \\
               x_m              &= 1      && , \forall m \in M \colon e \neq f ; \notag  \\
                                &         && \phantom{,{}}   g \neq h
\end{alignat}
\end{document}

Instead of \, you could use

\mathop{\smash[b]{\sum_{m \in M}}}

but it's more complicated with no real advantage other than inserting the thin space automatically.

I'd not left align x_m, but if you really want, you know how to do it.

Instead of the phantoms you could add another set of columns.