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Thanks gmedina !
Working and looking great.
Amine

Hi Alain,

Thanks a lot for the dfrac{}{} command that did exactly what I wanted.

The cases{} environment would have been perfect if it allowed to center each line. By default, it writes each cell of the table with a left alignement : as I want to be able to chose the alignement, the array{} suits ...

Hello,

I am writing equation systems with a left brace, like this for instance :

\begin{equation}
\left\{
\begin{array}{c}
\frac{\partial{u}}{\partial{x}} + \frac{\partial{u}}{\partial{x}} = 0 \\
\frac{\partial{p}}{\partial{x}} = 0 \\
\end{array}
\right.
\end{equation}

My problem is that ...