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Step * of Lemma btr_Leaf_wf

∀[val:ℤ]. (btr_Leaf(val) ∈ binary-tree())
BY
{ DepprodCoDatatypeConstructorWf `binary-tree_size` }

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Latex:

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


By

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Latex:
DepprodCoDatatypeConstructorWf  `binary-tree\_size`

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