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Step * of Lemma no_repeats-intersection

∀[A:Type]. ∀eq:EqDecider(A). ∀L1,L2:A List.  (no_repeats(A;L1) ⇒ no_repeats(A;(L1 ⋂ L2)))
BY
{ xxx(Auto THEN Unfold `l_intersection` 0 THEN BLemma `no_repeats_filter` THEN Auto)xxx }

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Latex:

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Latex:
\mforall{}[A:Type].  \mforall{}eq:EqDecider(A).  \mforall{}L1,L2:A  List.    (no\_repeats(A;L1)  {}\mRightarrow{}  no\_repeats(A;(L1  \mcap{}  L2)))


By

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Latex:
xxx(Auto  THEN  Unfold  `l\_intersection`  0  THEN  BLemma  `no\_repeats\_filter`  THEN  Auto)xxx

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