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Step * of Lemma map-fst-zip

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∀[as,bs:Top List].  map(λp.(fst(p));zip(as;bs)) ~ as supposing ||as|| = ||bs|| ∈ ℤ
BY
{ (RepeatFor 2 (InductionOnList) THEN Reduce 0 THEN Auto THEN (Assert 0 ≤ ||v|| BY Auto) THEN Auto) }

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Latex:

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Latex:
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\mforall{}[as,bs:Top  List].    map(\mlambda{}p.(fst(p));zip(as;bs))  \msim{}  as  supposing  ||as||  =  ||bs||


By

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Latex:
(RepeatFor  2  (InductionOnList)  THEN  Reduce  0  THEN  Auto  THEN  (Assert  0  \mleq{}  ||v||  BY  Auto)  THEN  Auto)

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