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Step * 1 of Lemma map-concat


1. f : Top
⊢ map(f;concat([])) ~ concat(map(λl.map(f;l);[]))
BY
{ (Reduce 0 THEN Auto) }

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Latex:

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Latex:

1.  f  :  Top
\mvdash{}  map(f;concat([]))  \msim{}  concat(map(\mlambda{}l.map(f;l);[]))


By

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Latex:
(Reduce  0  THEN  Auto)

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