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I would like to denote the interior of a set using the three letters "int". However, $\int$ clearly doesn't work as that is the integral sign. I would like it to look similar to how "min" looks when typing $\min$ in latex.

1 Answer 1

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This should do it.

\documentclass{scrartcl}
\usepackage{amsmath}

\DeclareMathOperator{\interior}{int}

\begin{document}

\begin{align*}
    \interior A&\\
    \exp A&\\
    \interior(A)&\\
    \exp(A)&\\
    \interior\Bigl(A\Bigr)&\\
    \exp\Bigl(A\Bigr)&
\end{align*}

\end{document}

enter image description here

The package https://ctan.org/pkg/amsopn is part of https://ctan.org/pkg/amsmath. The manual at https://ctan.org/pkg/short-math-guide might be useful for you, for example section 3.15. It is also found on page 48 of https://ctan.org/pkg/lshort-english. A discussion on manuals is found in What are good learning resources for a LaTeX beginner?.

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  • 3
    Thank you, exactly what I was looking for!
    – Is12Prime
    Mar 18, 2019 at 22:03
  • 1
    @Is12Prime You are welcome. Mar 18, 2019 at 22:15

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