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Step * of Lemma qle_functionality_wrt_implies

∀[a,b,c,d:ℚ].  ({a ≤ d supposing b ≤ c}) supposing ((c ≤ d) and (b ≥ a))
BY
{ (Unfold `guard` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b,c,d:\mBbbQ{}].    (\{a  \mleq{}  d  supposing  b  \mleq{}  c\})  supposing  ((c  \mleq{}  d)  and  (b  \mgeq{}  a))


By

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Latex:
(Unfold  `guard`  0  THEN  Auto)

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