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Step * 4 of Lemma r2-basic-geo-axioms


∀a,b,c,d,e,f:Point.  (ab>cd ⇒ cd ≥ ef ⇒ ab>ef)
BY
{ (UnfoldGeoAbbreviations 0 THEN Auto THEN FLemma `not-rless` [-1] THEN Auto) }

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Latex:

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Latex:

\mforall{}a,b,c,d,e,f:Point.    (ab>cd  {}\mRightarrow{}  cd  \mgeq{}  ef  {}\mRightarrow{}  ab>ef)


By

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Latex:
(UnfoldGeoAbbreviations  0  THEN  Auto  THEN  FLemma  `not-rless`  [-1]  THEN  Auto)

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