deletions | additions       diff --git a/Prony 2D.tex b/Prony 2D.tex  index d4dda58..528db4b 100644  --- a/Prony 2D.tex  +++ b/Prony 2D.tex 
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$$  \begin{cases}  m_{U,k}(\mu_V) = e^{-2\pi i (-\mu_U/2) k \delta} + e^{-2\pi i (\mu_U/2) k \delta}, \\  m_{U,k}(a_1, m_{V,k}(a_1,  a_2, \mu_V) = a_1 e^{-2\pi i (-\mu_V/2) k \delta} + a_2 e^{-2\pi i (\mu_V/2) k \delta}. \end{cases}  $$ 
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$$  You can see equipotential surfaces of the field on the following figure ($\delta = 0.2$, $\mu_U \in [0.1, 5]$)