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Step * of Lemma oobboth?_wf

∀[A,B:Type]. ∀[x:one_or_both(A;B)].  (oobboth?(x) ∈ 𝔹)
BY
{ Auto THEN RW (AddrC [2] (UnfoldTopAbC)) 0 THEN Auto }

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Latex:

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Latex:
\mforall{}[A,B:Type].  \mforall{}[x:one\_or\_both(A;B)].    (oobboth?(x)  \mmember{}  \mBbbB{})


By

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Latex:
Auto  THEN  RW  (AddrC  [2]  (UnfoldTopAbC))  0  THEN  Auto

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