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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{ottmath}[2023/09/03]
\newcommand{\diff}{\, d}
\newcommand{\pdiff}{\, \partial}
\newcommand{\od}[3][]{\frac{d{}^{#1}#2}{d{#3}^{#1}}}
\newcommand{\pd}[3][]{\frac{\partial{}^{#1}#2}{\partial{#3}^{#1}}}
\newcommand\pvec[1]{\vec{#1}\,'}
\newcommand\Del{\vec{\nabla}}
\newcommand\eval[1]{\Big| _{#1}}
\renewcommand\mid{\;
\ifnum\currentgrouptype=16
\middle|
\else
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\fi\;}
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