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Step * of Lemma sorted-by-nil

∀[R:Top]. uiff(sorted-by(R;[]);True)
BY
{ (Unfold `sorted-by` 0 THEN Auto THEN All Reduce  THEN Auto) }

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Latex:

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Latex:
\mforall{}[R:Top].  uiff(sorted-by(R;[]);True)


By

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Latex:
(Unfold  `sorted-by`  0  THEN  Auto  THEN  All  Reduce    THEN  Auto)

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