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Step * of Lemma uimplies_transitivity

∀[P,Q,R:ℙ].  (Q supposing P ⇒ R supposing Q ⇒ {R supposing P})
BY
{ (Unfold `guard` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[P,Q,R:\mBbbP{}].    (Q  supposing  P  {}\mRightarrow{}  R  supposing  Q  {}\mRightarrow{}  \{R  supposing  P\})


By

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Latex:
(Unfold  `guard`  0  THEN  Auto)

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