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\begin{document}

\begin{center}
\large\bfseries
Do stretchy characters in {\TeX} influence intrinsic widths?
\end{center}

\begin{multicols}{2}

$$ \sum\limits_{i=0}^{10} \left. i \right. $$
$$ \sum\limits_{i=0}^{10} \left. \frac{1}{i + 1} \right. $$
$$ \int\limits_{0}^{1} \left. \frac{1}{x + 1} \, dx \right. $$
$$ \int\limits_{0}^{1} \left. x \, dx \right. $$

In inline math, we have
$ \sum\limits_{i=0}^{10} \left. i \right. $,
$ \sum\limits_{i=0}^{10} \left. \frac{1}{i + 1} \right. $,
$ \int\limits_{0}^{1} \left. \frac{1}{x + 1} \, dx \right. $, and
$ \int\limits_{0}^{1} \left. x \, dx \right. $.

$$ \frac{1}{\sum\limits_{i=0}^{10} \left. i \right.} $$
$$ \frac{1}{\sum\limits_{i=0}^{10} \left. \frac{1}{i + 1} \right.} $$
$$ \frac{1}{\int\limits_{0}^{1} \left. \frac{1}{x + 1} \, dx \right.} $$
$$ \frac{1}{\int\limits_{0}^{1} \left. x \, dx \right.} $$

$$ \sqrt{2} $$
$$ \sqrt\frac{1}{\pi + 1} $$
$$ \sqrt\frac{1}{\frac{1}{\pi + 1}} $$

$$ \left[ \begin{array}{c} 1 \end{array} \right] $$
$$ \left| \begin{array}{c} 1 \end{array} \right| = 1 $$
$$ \left[ \begin{array}{ccc} 1 & 0 & 0\\0 & 1 & 0\\0 & 0 & 1\end{array}
\right]$$
$$ \left| \begin{array}{ccc} 1 & 0 & 0\\0 & 1 & 0\\0 & 0 & 1\end{array}
\right| = 1 $$

$$ \left( x \right) $$
$$ \left( \int\limits_{1}^{\infty}\frac{1}{x}\,dx \right) $$

$$ \left( \begin{array}{c} 1 \end{array} \right) $$
$$ \left( \begin{array}{c} 1\\2\\3 \end{array} \right) $$
$$ \left( \begin{array}{c} 1\\2\\3\\4\\5\\6\\7 \end{array} \right) $$

\end{multicols}
\end{document}
