Step
*
5
of Lemma
assert-isname
.....wf..... 
1. L : Cname List
2. z : extd-nameset(L)
⊢ z ∈ nameset(L) ∈ Type
BY
{ (GenConcl ⌜z = b ∈ Base⌝⋅ THEN Auto) }
Latex:
Latex:
.....wf..... 
1.  L  :  Cname  List
2.  z  :  extd-nameset(L)
\mvdash{}  z  \mmember{}  nameset(L)  \mmember{}  Type
By
Latex:
(GenConcl  \mkleeneopen{}z  =  b\mkleeneclose{}\mcdot{}  THEN  Auto)
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