diff --git a/01.curriculum/02.mathematic/03.niv3/10.linear-algebra/10.sets-relation-boolean-algebra/textbook.fr.md b/01.curriculum/02.mathematic/03.niv3/10.linear-algebra/10.sets-relation-boolean-algebra/textbook.fr.md
index 4ac13f871..2019d05fd 100644
--- a/01.curriculum/02.mathematic/03.niv3/10.linear-algebra/10.sets-relation-boolean-algebra/textbook.fr.md
+++ b/01.curriculum/02.mathematic/03.niv3/10.linear-algebra/10.sets-relation-boolean-algebra/textbook.fr.md
@@ -17,9 +17,12 @@ et leur présentation plus aboutie et rigoureuse en mathématique.
 Sets and subsets
 Conjuntos y subconjuntos
 
-## Applications, fonctions
-Binary relations, functions
-Relaciones y funciones
+Pour la partie visuelle, on prend l'exemple d'un jeu de carte? C'est un bon exemple
+qui sera utilisé dans la partie entropie en physique statistique et en information...
+
+## Relations binaires et fonctions
+Binary relations and functions
+Relaciones binarios y funciones
 
 Binary relation from a set A to a set B :  is a set of ordered pairs, (m, n),
 or m and n, where m is from the set M, n is from the set N, and m is related to n by some rule.