-First, if domain of definition of the function $M_{ij}^l$ is not empty, by
-induction hypothesis $M_{ij}^{l}(0)$ is $\left(X_i^{D_{ji}^{c}}, D_{ji}^{c},c
-\right)$ where $c$ is $\min\{k | D_{ji}^k > D_{ji}^{l-2} \}$.
-
-At iteration $l$, if $l < c + 1$ then the \verb+skip+ statement is executed in