Step
*
of Lemma
cons_cons_permr
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∀T:Type. ∀a,a':T. ∀as,as':T List. ((as ≡(T) as')
⇒ ([a; [a' / as]] ≡(T) [a'; [a / as']]))
BY
{ Auto }
Latex:
Latex:
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\mforall{}T:Type. \mforall{}a,a':T. \mforall{}as,as':T List. ((as \mequiv{}(T) as') {}\mRightarrow{} ([a; [a' / as]] \mequiv{}(T) [a'; [a / as']]))
By
Latex:
Auto
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