Step
*
of Lemma
equipollent_weakening
∀[A,B:Type]. A ~ B supposing A = B ∈ Type
BY
{ (Unfold `equipollent` 0 THEN Auto THEN HypSubst' -1 0 THEN Auto THEN InstConcl [⌜λx.x⌝]⋅ THEN Auto)⋅ }
Latex:
Latex:
\mforall{}[A,B:Type]. A \msim{} B supposing A = B
By
Latex:
(Unfold `equipollent` 0 THEN Auto THEN HypSubst' -1 0 THEN Auto THEN InstConcl [\mkleeneopen{}\mlambda{}x.x\mkleeneclose{}]\mcdot{} THEN Auto)\mcdot{}
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