[Tex/LaTex] Integration Symbol with Limits

math-modemath-operators

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How can I write the integration symbol in latex as shown in the picture?

Best Answer

\documentclass{article}
\usepackage{amsfonts,amsmath}
\begin{document}
\[
  \int_{\substack{a\\\mathcal{P}}}^b (\nabla ...)
\]

\[
  \int\limits_{\substack{a\\\mathcal{P}}}^b (\nabla ...)
\]
\end{document}

enter image description here