diff --git a/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md b/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
index b7696555b..8c6b060f1 100644
--- a/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
+++ b/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
@@ -630,7 +630,7 @@ $`\displaystyle\oint_{\Gamma\,orient.}\overrightarrow{H} \cdot \overrightarrow{d
 
 local (magnétostatique)
 
-$`\overrightarrow{rot}\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}`$
+$`\overrightarrow{rot}\,\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}`$
 
 Electromagnétisme dans le vide :
 
@@ -678,11 +678,11 @@ $`\epsilon_0 \cdot \mu_0 \cdot c^2 = 1`$
 
 $`div\overrightarrow{E}=\dfrac{\rho}{\epsilon_0}`$
 
-$`\overrightarrow{rot}\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}`$
+$`\overrightarrow{rot}\,\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}`$
 
 $`div\overrightarrow{B}=0`$
 
-$`\overrightarrow{rot}\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$
+$`\overrightarrow{rot}\,\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$
 
 #### Ecuaciones de Maxwell en forma integral / Equations de maxwell intégrales / ...