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I try to write this equation on overleaf and numbering in second line (the same as in the picture) but I couldn't. Another problem is when I use align or equation, the prime in max' function goes to the center but not the right of max. Help me!!

enter image description here

egreg
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Lyn
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    Welcome. No need to shout in the header. Without code we can't hardly help you. This is certainly possible with the align or the alignat environment with \nonumber on the first line. For the \max problem, use \nolimits or a package option. – Qrrbrbirlbel Sep 26 '23 at 09:08

1 Answers1

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You want to use align.

See the code below on how to get max'.

\documentclass{article}
\usepackage{amsmath}

\DeclareMathOperator{\pmax}{max^{\prime}}


\begin{document}


\begin{align}
(-\partial_uJ(\bar{y},\bar{u}),h){L^2} = (p,h){L^2}
&= (-\Delta\delta+\pmax(\bar{y};\delta),p){L^2} \notag \
&= (-\Delta\delta+\chi\delta,p){L^2}+(\pmax(\bar{y};\delta)-\chi\delta,p)_{L^2}
\end{align}


\end{document}

enter image description here

egreg
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