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Step * 1 1 of Lemma nim_sum0_lemma


1. y : Top
⊢ y ~ y
BY
{ Try (RW (AddrC [2] (IdC)) 0)⋅ }

1
1. y : Top
⊢ y ~ y

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Latex:

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Latex:

1.  y  :  Top
\mvdash{}  y  \msim{}  y


By

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Latex:
Try  (RW  (AddrC  [2]  (IdC))  0)\mcdot{}

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