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Step * 1 of Lemma vr_test_foo_bar345566

.....subterm..... T:t
1:n
1. x : ℕ7 ⋂ {3..9-}@i
⊢ x ∈ {3..7-}
BY
{ (Isect2HD 1 THEN Auto) }

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Latex:

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Latex:
.....subterm.....  T:t
1:n
1.  x  :  \mBbbN{}7  \mcap{}  \{3..9\msupminus{}\}@i
\mvdash{}  x  \mmember{}  \{3..7\msupminus{}\}


By

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Latex:
(Isect2HD  1  THEN  Auto)

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