<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{article}

\usepackage{phfparen}

\begin{document}

Write parentheses with the backtick (`) character.
\begin{align*}
    `*(1)                                       &amp;  &amp; `*[1]                                       &amp;  &amp; `*{1}                                       &amp;  &amp; `*&lt;1&gt;                                       \\
    `*(\frac{1}{2})                             &amp;  &amp; `*[\frac{1}{2}]                             &amp;  &amp; `*{\frac{1}{2}}                             &amp;  &amp; `*&lt;\frac{1}{2}&gt;                             \\
    `*(\frac{1}{2 + \frac{1}{2}})               &amp;  &amp; `*[\frac{1}{2 + \frac{1}{2}}]               &amp;  &amp; `*{\frac{1}{2 + \frac{1}{2}}}               &amp;  &amp; `*&lt;\frac{1}{2 + \frac{1}{2}}&gt;               \\
    `*(\frac{1}{2 + \frac{1}{2 + \frac{1}{2}}}) &amp;  &amp; `*[\frac{1}{2 + \frac{1}{2 + \frac{1}{2}}}] &amp;  &amp; `*{\frac{1}{2 + \frac{1}{2 + \frac{1}{2}}}} &amp;  &amp; `*&lt;\frac{1}{2 + \frac{1}{2 + \frac{1}{2}}}&gt; \\
\end{align*}

Same for inline math: \( `*(1) \), \( `*(\frac{1}{2}) \), \( `*[\frac{1}{2}] \), \( `*{\frac{1}{2}} \), \( `*&lt;\frac{1}{2}&gt; \)

If you need small braces, write without asterisk, e.g.~\( `(\frac{1}{2 + \frac{1}{2}}) \)

\end{document}</pre></body></html>