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Step * of Lemma equal-wf

∀[x,y:Base]. ∀[T:Type].  (x = y ∈ T ∈ Type)
BY
{ Auto }

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Latex:

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Latex:
\mforall{}[x,y:Base].  \mforall{}[T:Type].    (x  =  y  \mmember{}  Type)


By

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Latex:
Auto

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