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Step * of Lemma biject_wf

∀[A,B:Type]. ∀[f:A ⟶ B].  (Bij(A;B;f) ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[A,B:Type].  \mforall{}[f:A  {}\mrightarrow{}  B].    (Bij(A;B;f)  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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