3-NIRVANA-user-guide/3.2-User-interfaces.md

@@ -1851,7 +1851,7 @@ for coding a background magnetic field, **B**<sub>0</sub>, in the context
 of the magnetic field splitting formalism.
 **B**<sub>0</sub> must be a time-independent, divergence-free potential field, i.e.,
 
-$\partial$<sub>t</sub>**B**<sub>0</sub>=0,
+\partial <sub>t</sub>**B**<sub>0</sub>=0,
 
 ∇⋅**B**<sub>0</sub>=0