$\forall$$T$:Type, $R$:($T$$\rightarrow$$T$$\rightarrow\mathbb{P}$).
\\[0ex]SWellFounded($R$($x$,$y$)) $\Rightarrow$ ($\forall$$x$, $y$:$T$. Dec($\exists$$z$:$T$. ($R$($x$,$z$) \& $R$($z$,$y$)))) $\Rightarrow$ $R$\^{}+ =$>$ $R$!\^{}+