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Date: Wed, 21 Sep 2022 15:02:54 +0200
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Subject: Re: \bar et amsmath
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From: Daniel Flipo <dflipo@nowhere.com>
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Bonjour,

> mais avec amsmath ça râle
> 
> \documentclass{article}
> \usepackage{amsmath}
> \begin{document}
> \[
>    \bar{\bigcap_{\tilde{j}\in\tilde{\mathcal{T}}^{w} }}
> \]
> \end{document}

En ajoutant \usepackage{unicode-math} et en compilant avec lualatex, il 
n'y a pas de message d'erreur et le résultat me semble correct.
-- 
Daniel Flipo