Step
*
1
of Lemma
nim_sum0_lemma
1. y : Top
⊢ nim-sum(0;y) ~ y
BY
{ Try (RW (AddrC [1] (UnfoldC `nim-sum` ANDTHENC ReduceC)) 0)⋅ }
1
1. y : Top
⊢ y ~ y
Latex:
Latex:
1.  y  :  Top
\mvdash{}  nim-sum(0;y)  \msim{}  y
By
Latex:
Try  (RW  (AddrC  [1]  (UnfoldC  `nim-sum`  ANDTHENC  ReduceC))  0)\mcdot{}
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