\begin{tabbing}
$\forall$${\it es}$:ES, $i$:Id, $L$:(IdLnk List), $T$:(Id$\rightarrow$Type).
\\[0ex]es{-}secret{-}server\=\{table:ut2, encrypt:ut2, decrypt:ut2\}\+
\\[0ex](${\it es}$; $T$; $L$; $i$)
\-\\[0ex]$\Rightarrow$ \=$\forall$$e_{1}$@$i$.\+
\\[0ex]$\forall$$e_{2}$@$i$.
\\[0ex]$\forall$$n$:\{0..$\parallel$"table" when $e_{1}$$\parallel$ $^{-}$\}, $m$:\{0..$\parallel$"table" when $e_{2}$$\parallel$ $^{-}$\}.
\\[0ex](st{-}atom("table" when $e_{1}$;$n$) = st{-}atom("table" when $e_{2}$;$m$) $\in$ Atom1) $\Rightarrow$ ($n$ = $m$ $\in$ $\mathbb{Z}$)
\-
\end{tabbing}