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+---
+title: Invariances and symmetries
+published: false
+routable: false
+visible: false
+
+---
+<!--
+lessons:
+    - slug: 
+      order: 
+-->      
+ 
+!!!! *LESSON  UNDER  CONSTRUCTION :* <br>
+!!!! Published but invisible: does not appear in the tree structure of the m3p2.com site. This course is *under construction*, it is *not approved by the pedagogical team* at this stage. <br>
+!!!! Working document intended only for the pedagogical team.
+
+<!--MetaData : ... -->
+
+!  *Theme* :<br>
+! *Causes and effects, invariances and symmetries, polar and axial vectors*<br>
+! Guide to establishing the 3 parts: main, overview, beyond.<br>
+!
+! (_precedes the themes: <br>
+! Electrostatics: Application of Gauss's theorem, integral form and local form. <br>
+! Magnetostatics: Application of Ampère's theorem, integral form and local form)_