3-NIRVANA-user-guide/3.1-Code-basics.md

@@ -454,11 +454,7 @@ criteria which are
     flow features right in time.*
 
 -   Jeans-length-based (important in simulations involving selfgravity):
-    $$\\left(\\frac{\\pi}{G}\\frac{c\_s^2}{\\varrho}\\right)^{1/2}
-    \\cdot \\mathcal{E}\_\\mathrm{Jeans}\\left\\{\\begin{array}{ll}
-    <\\delta\\,\\!s & \\mbox{refinement}\\\\
-    >1.25\\delta\\,\\!s & \\mbox{derefinement}\\\\
-    \\end{array}\\right.$$
+![amr_Jeans](uploads/6f5d6baa55c30a2a3ce4c5a11cca7cb3/amr_Jeans.png)
     where the first factor is the local Jeans length with
     *c*<sub>*s*</sub> the sound speed and *G* the gravitational
     constant, and where