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Step * of Lemma member_bs_tree_wf

∀[E:Type]. ∀[x:E]. ∀[tr:bs_tree(E)].  (member_bs_tree(E;x;tr) ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[E:Type].  \mforall{}[x:E].  \mforall{}[tr:bs\_tree(E)].    (member\_bs\_tree(E;x;tr)  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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