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Step * of Lemma equalf_from_lef_wf

∀[y:Type]. ∀[lef:y ⟶ y ⟶ 𝔹]. ∀[x,y:y].  (equalf_from_lef(lef;x;y) ∈ 𝔹)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[y:Type].  \mforall{}[lef:y  {}\mrightarrow{}  y  {}\mrightarrow{}  \mBbbB{}].  \mforall{}[x,y:y].    (equalf\_from\_lef(lef;x;y)  \mmember{}  \mBbbB{})


By

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Latex:
ProveWfLemma

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