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Step * of Lemma remove-repeats-append

∀[T:Type]. ∀[eq:EqDecider(T)]. ∀[L1,L2:T List].  (||remove-repeats(eq;L1 @ L2)|| = ||remove-repeats(eq;L2 @ L1)|| ∈ ℤ)
BY
{ (Auto THEN BLemma `remove-repeats-set-equal` THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[eq:EqDecider(T)].  \mforall{}[L1,L2:T  List].
    (||remove-repeats(eq;L1  @  L2)||  =  ||remove-repeats(eq;L2  @  L1)||)


By

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Latex:
(Auto  THEN  BLemma  `remove-repeats-set-equal`  THEN  Auto)

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