diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/30.n3/10.brainstorming/01.p1/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/30.n3/10.brainstorming/01.p1/textbook.fr.md
index 2916f712e..32624a0eb 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/30.n3/10.brainstorming/01.p1/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/30.n3/10.brainstorming/01.p1/textbook.fr.md
@@ -125,14 +125,12 @@ si $`q=p^n`$, alors $`\log_p(q)=n`$, où $`n,p,q`$ sont des entiers et $`p,q`$ p
 <!------------------------------------------------------------------------------
 MATRICES
 ------------------------------------------------------------------------------->
-! *Matrices carrés*
-
-$`\begin{matrix} a&b\\ c&d \end{matrix}`$      
-$`\begin{pmatrix} a&b\\ c&d \end{pmatrix}`$    
-$`\begin{vmatrix} a&b\\ c&d \end{vmatrix}`$       
-$`\begin{Vmatrix} a&b\\ c&d \end{Vmatrix}`$       
-$`\begin{bmatrix} a&b\\ c&d \end{bmatrix}`$       
-$`\begin{Bmatrix} a&b\\ c&d \end{Bmatrix}`$       
+! *Matrices*
+
+* Matrices $`(n,m)`$ : $`\begin{pmatrix} a_{11} & \ldots & a_{1m} \\ \vdots \ddots \vdots a_{n1} & \ldots & a_{nm}\\ \end{pmatrix}`$ 
+* Calcul matriciel
+* Déterminant d'une matrice carrée : 
+  $`\{vmatrix} a_{11} & \ldots & a_{1n} \\ \vdots \ddots \vdots a_{n1} & \ldots & a_{nn}\\ \end{pmatrix}`$  
 
 
 <!------------------------------------------------------------------------------