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Step * 1 of Lemma member_rset_neg_lemma


1. x : Top@i
2. A : Top@i
⊢ x ∈ -(A) ~ -(x) ∈ A
BY
{ Try (RW (AddrC [1] (UnfoldsC ``rset-member rset-neg`` ANDTHENC ReduceC)) 0)⋅ }

1
1. x : Top@i
2. A : Top@i
⊢ -(x) ∈ A ~ -(x) ∈ A

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Latex:

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Latex:

1.  x  :  Top@i
2.  A  :  Top@i
\mvdash{}  x  \mmember{}  -(A)  \msim{}  -(x)  \mmember{}  A


By

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Latex:
Try  (RW  (AddrC  [1]  (UnfoldsC  ``rset-member  rset-neg``  ANDTHENC  ReduceC))  0)\mcdot{}

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