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Step * of Lemma strong-subtype_witness

∀[A,B:Type].  (strong-subtype(A;B) ⇒ (<Ax, Ax> ∈ strong-subtype(A;B)))
BY
{ (Auto THEN ExRepD THEN (FLemma `strong-subtype-implies` [3] THENA Auto) THEN FHyp (-1) [-2] THEN Auto) }

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Latex:

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Latex:
\mforall{}[A,B:Type].    (strong-subtype(A;B)  {}\mRightarrow{}  (<Ax,  Ax>  \mmember{}  strong-subtype(A;B)))


By

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Latex:
(Auto
  THEN  ExRepD
  THEN  (FLemma  `strong-subtype-implies`  [3]  THENA  Auto)
  THEN  FHyp  (-1)  [-2]
  THEN  Auto)

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