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Step * of Lemma btr_Leaf-val_wf

∀[v:binary-tree()]. btr_Leaf-val(v) ∈ ℤ supposing ↑btr_Leaf?(v)
BY
{ DepprodCoDatatypeSelectorWf }

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Latex:

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Latex:
\mforall{}[v:binary-tree()].  btr\_Leaf-val(v)  \mmember{}  \mBbbZ{}  supposing  \muparrow{}btr\_Leaf?(v)


By

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Latex:
DepprodCoDatatypeSelectorWf

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