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Update 12.temporary_ins/10.electrostatics-vacuum/40.gauss-theorem-applications/25.cylindrical-charge-distributions/20.gauss-local/20.overview/cheatsheet.fr.md

12.temporary_ins/10.electrostatics-vacuum/40.gauss-theorem-applications/25.cylindrical-charge-distributions/20.gauss-local/20.overview/cheatsheet.fr.md

@@ -159,7 +159,7 @@ _figure à joindre_
 
 **En tout point $`M\in Oz`$** :
 * $`\left.\begin{array}{l} \overrightarrow{E}\;\text{vecteur polaire} \\
-\exists \mathcal{P}_1\mid P_1\supset Oz  \text{ , plan de symétrie} \\
+\exists \mathcal{P}_1\mid \mathcal{P}_1\supset Oz  \text{ , plan de symétrie} \\
 \exists \mathcal{P}_2 \ne \mathcal{P}_1 \mid \mathcal{P}_2\supset Oz  \text{ , plan de symétrie}
 \end{array}\right\}\,\Longrightarrow`$**$`\mathbf{\overrightarrow{E}=E_z\,\overrightarrow{e_z}}`$**