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Step * 1 of Lemma concat-single


1. l : Top List
⊢ l @ [] ~ l
BY
{ (RWO "append-nil" 0 THEN Auto) }

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Latex:

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Latex:

1.  l  :  Top  List
\mvdash{}  l  @  []  \msim{}  l


By

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Latex:
(RWO  "append-nil"  0  THEN  Auto)

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