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Step * 1 of Lemma member_nth_tl

.....basecase..... 
1. [T] : Type
⊢ ∀x:T. ∀L:T List.  ((x ∈ nth_tl(0;L)) ⇒ (x ∈ L))
BY
{ (Reduce 0 THEN Auto) }

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Latex:

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Latex:
.....basecase..... 
1.  [T]  :  Type
\mvdash{}  \mforall{}x:T.  \mforall{}L:T  List.    ((x  \mmember{}  nth\_tl(0;L))  {}\mRightarrow{}  (x  \mmember{}  L))


By

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Latex:
(Reduce  0  THEN  Auto)

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