Strict-2D-or-1D-mode.md

@@ -13,12 +13,12 @@ In the W-SLDA toolkit it is possible to simulate "*strict 2d*" cases without any
 
 In the toolkit the default Fermi momentum is defined for the 3d case. If you are using strict 2d or 1d cases it is highly suggested to set the value of the Fermi momentum in the input file as **referencekF**.  
 The Fermi momentum for the 2d case:
-* ![k_F = \sqrt{2\pi n}](https://latex.codecogs.com/gif.latex?k_F%20%3D%20%5Csqrt%7B2%5Cpi%20n%7D)
+* $`k_F = \sqrt{2\pi n}`$
 
 The Fermi momentum for the 1d case:
-* ![k_F = \frac{\pi n}{2}](https://latex.codecogs.com/png.latex?k_F%20%3D%20%5Cfrac%7B%5Cpi%20n%7D%7B2%7D)
+* $`k_F = \frac{\pi n}{2}`$
 
-where n is the total density of the box.
+where $`n`$ is the total density (spin up + spin down) of the gas.
 
 # Choosing the Functional