deletions | additions       diff --git a/figures/mask_scheme1/caption.tex b/figures/mask_scheme1/caption.tex  index 0491aa4..6c40cc8 100644  --- a/figures/mask_scheme1/caption.tex  +++ b/figures/mask_scheme1/caption.tex 
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components localized in different spatial regions $A$ and $B$ according to the diagram in (b).   In $A$ the states are represented on a real-space grid while in $B$ they are described in momentum space.  A striped region indicates the volume where the two representations overlap.  The propagation scheme of Eqs~\eqref{eq:FMM_prop} eqs~\eqref{eq:FMM_prop}  and \eqref{eq:FMM_prop_aux} allows seamless transitions from one representations to the other and is capable to describe electrons following closed trajectories like the one in (b).