Update 12.temporary_ins/44.relativity/40.n4/10.special-relativity/07.coherence/textbook.fr.md

12.temporary_ins/44.relativity/40.n4/10.special-relativity/07.coherence/textbook.fr.md

@@ -44,12 +44,12 @@ ds^2&=(dx^0)^2 -(dx^1)^2 -(dx^2)^2 -(dx^3)^2\\
 \end{align}`$
 
 $`\begin{align}
-ds^2&=(dx^0)^2 -(dx^1)^2 -(dx^2)^2 -(dx^3)^2\\
+ds^2=\big(dx^0\big)^2 -\big(dx^1\big)^2 -\big(dx^2\big)^2 -\big(dx^3\big)^2\\
 \\
-&=g_{ab}dx^a dx^b
+&=g_{ab}\;dx^a dx^b
 \end{align}`$
 
-tensuer métrique associé aux coordonnées $`(x^0\;,\;x^1\;,\;x^2=;,\;x^3`$
+tensuer métrique associé aux coordonnées $`\big(x^0,\,x^1,\,x^2,\,x^3\big)`$                                           
 
 $`g_{ab}`$
 $`\;=\begin{pmatrix}