3

like this enter image description here

I need an extra index notation for the integral symbol .

I know the /displaylimits could modify the position of index notation, but I wonder how to add three index notation to an integral symbol?

1 Answer 1

5

The macro \inttriple, defined below, may do the job.

enter image description here

\documentclass{article} % or some other suitable document class
\usepackage{mathtools} % for '\mathclap' macro
\newlength\mylen 
\settowidth\mylen{$\displaystyle\int$}

%% define a new macro:
\newcommand\inttriple[3]{\mathop{{\int\limits_{\mathclap{#1}}}
                                 \kern-\mylen 
                                 {\int_{#2}^{#3}}}}
           
\begin{document}
\begin{align*}
x &= \int_{0}^{\infty} \\
  &= \inttriple{\gamma}{0}{\infty} \\
  &= \inttriple{\text{hello}}{0}{\infty}
\end{align*}
\end{document}
2
  • 1
    Great help! Your command works very well, thanks.
    – Dr. Sundar
    Mar 20, 2022 at 7:45
  • 1
    thanks for answer,and sorry for my poor english
    – uuthi j
    Mar 21, 2022 at 2:17

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