## Space

space

$aaa \ bbb$

aaa \ bbb

To represent a space, you can use a combination of "\ " and a space. Using just a space character alone may not display as intended.

wide space

$aaa \quad bbb$

aaa \quad bbb

To represent a wider space, you can either repeat the space multiple times or use the "\quad" command. The term "quad" is derived from "quadrat," which refers to a square frame. In applications like Word, a space is sometimes represented as a square shape, and imagining that can provide a clearer understanding of the command.

wide space 2

$aaa \qquad bbb$

aaa \qquad bbb

The more "q"s you add to "quad", the wider the space becomes.

specified space size

$aaa \hspace{ 10pt } bbb$

aaa \hspace{ 10pt } bbb

The command "\hspace" is used to create horizontal space. It allows you to specify the desired size of the space you want to create.

no space

$aaa \! bbb$

aaa \! bbb

By combining the commands "\" and "!", you can reduce the space between two elements.

new line

$\begin{eqnarray} aaa \\ bbb \end{eqnarray}$

\begin{eqnarray}
aaa \\ bbb
\end{eqnarray}

By doubling the backslash "\" or using the command "\cr", you can create a line break or new line. The "cr" stands for "carriage return," which represents the control character that moves the cursor to the beginning of the line.

specified new line size

$\begin{eqnarray} aaa \\[5pt] bbb \end{eqnarray}$

\begin{eqnarray}
aaa \\[5pt] bbb
\end{eqnarray}

After doubling the backslash "\" to indicate a line break, you can specify the width of the line break using additional commands.

specified new line size sample

$\begin{eqnarray} & & \frac{1}{2} +\frac{1}{3} +\frac{1}{6} \\[ 5pt ] &=& \frac{3}{6} +\frac{2}{6} +\frac{1}{6} \\ &=& 1 \end{eqnarray}$

\begin{eqnarray}
& & \frac{1}{2} +\frac{1}{3} +\frac{1}{6} \\[ 5pt ]
&=& \frac{3}{6} +\frac{2}{6} +\frac{1}{6} \\
&=& 1
\end{eqnarray}
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