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Step * 2 of Lemma id-morph_wf


1. I : Cname List
2. i : nameset(I)@i
3. j : nameset(I)@i
4. ↑isname(i)@i
⊢ isname(j) ∈ 𝔹
BY
{ (Assert ⌜j ∈ extd-nameset(I)⌝⋅ THEN Auto) }

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Latex:

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Latex:

1.  I  :  Cname  List
2.  i  :  nameset(I)@i
3.  j  :  nameset(I)@i
4.  \muparrow{}isname(i)@i
\mvdash{}  isname(j)  \mmember{}  \mBbbB{}


By

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Latex:
(Assert  \mkleeneopen{}j  \mmember{}  extd-nameset(I)\mkleeneclose{}\mcdot{}  THEN  Auto)

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