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Step * 2 of Lemma Russell_wf

.....subterm..... T:t
2:n
1. T : Type ⋂ Base
⊢ ¬(T ∈ T) ∈ 𝕌'
BY
{ (MemCD THEN RW (AddrC [2] UnfoldTopAbC) 0 THEN BLemma `equal-wf-base` THEN Auto) }

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Latex:

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Latex:
.....subterm.....  T:t
2:n
1.  T  :  Type  \mcap{}  Base
\mvdash{}  \mneg{}(T  \mmember{}  T)  \mmember{}  \mBbbU{}'


By

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Latex:
(MemCD  THEN  RW  (AddrC  [2]  UnfoldTopAbC)  0  THEN  BLemma  `equal-wf-base`  THEN  Auto)

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