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Step * of Lemma shorten-tuple-simplify2

∀[p:Top × Top × Top]. (snd(shorten-tuple(p;1)) ~ snd(snd(p)))
BY
{ ((D 0 THENA Auto) THEN RepeatFor 2 (D -1) THEN Reduce 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[p:Top  \mtimes{}  Top  \mtimes{}  Top].  (snd(shorten-tuple(p;1))  \msim{}  snd(snd(p)))


By

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Latex:
((D  0  THENA  Auto)  THEN  RepeatFor  2  (D  -1)  THEN  Reduce  0  THEN  Auto)

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