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Step * 1 of Lemma not-assert-isname


1. L : Cname List
2. z : extd-nameset(L)
3. ¬↑isname(z)
⊢ z ∈ ℕ2
BY
{ TACTIC:(Dexname 2 THEN Try (Declaration)) }

1
1. L : Cname List
2. a1 : nameset(L)
3. ¬↑isname(a1)
⊢ a1 ∈ ℕ2

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Latex:

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Latex:

1.  L  :  Cname  List
2.  z  :  extd-nameset(L)
3.  \mneg{}\muparrow{}isname(z)
\mvdash{}  z  \mmember{}  \mBbbN{}2


By

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Latex:
TACTIC:(Dexname  2  THEN  Try  (Declaration))

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