@@ -21,7 +21,7 @@ \subsection{Boundary conditions}
2121 equation via Fourier transforms, i.e. periodic)
2222
2323 \item Always remember that the self-energy \emph {forces } the boundary conditions,
24- i.e. long range potential decay may be forced too short
24+ i.e. a long range decay-potential may be forced too short
2525
2626 \end {itemize }
2727
@@ -76,11 +76,11 @@ \subsection{Boundary conditions}
7676 The electrode Hartree potential are the boundary conditions.
7777
7878 In TranSiesta this is accomplished by fixing the electrostatic potential at one of the
79- electrode planes (the one farthest from the device region).
79+ electrode planes (the plane farthest from the device region).
8080
8181 \begin {itemize }
8282 \item For $ N_\idxE =2 $ and aligned semi-infinite directions the potential profile can
83- easily be approximated by a linear ramp.
83+ easily be approximated by a linear ramp $ V(x) = ax+b $ .
8484
8585 \item For un-aligned semi-infinite directions (or $ N_\idxE \neq 2 $ ) the potential
8686 profile cannot easily be approximated.
@@ -92,8 +92,9 @@ \subsection{Boundary conditions}
9292
9393 \item A much better approach is to provide an \emph {external } potential profile
9494 guess, i.e. solve the boundary conditions using external Poisson
95- solvers\footnote {This may seem like a more daunting task than it is. The guess is
96- the Poisson solution \emph {without } charges, only the boundary conditions.}
95+ solvers\footnote {\uncover <4->{This may seem like a more daunting task than it
96+ is. The guess is the Poisson solution \emph {without } charges, only the
97+ boundary conditions.}}
9798
9899 \end {itemize }
99100 \end {itemize }
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