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Step * of Lemma l_tree_node-left_subtree_wf

∀[L,T:Type]. ∀[v:l_tree(L;T)].  l_tree_node-left_subtree(v) ∈ l_tree(L;T) supposing ↑l_tree_node?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:


\mforall{}[L,T:Type].  \mforall{}[v:l\_tree(L;T)].    l\_tree\_node-left\_subtree(v)  \mmember{}  l\_tree(L;T)  supposing  \muparrow{}l\_tree\_node?(v)


By

DepprodCoDatatypeSelectorWf

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