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Step * of Lemma rng_plus_comm2

∀[r:Rng]. Comm(|r|;+r)
BY
{ (Auto THEN InstLemma `rng_plus_comm` [⌜r⌝]⋅ THEN Auto THEN Fold `comm` (-1) THEN Auto) }

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Latex:

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Latex:
\mforall{}[r:Rng].  Comm(|r|;+r)


By

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Latex:
(Auto  THEN  InstLemma  `rng\_plus\_comm`  [\mkleeneopen{}r\mkleeneclose{}]\mcdot{}  THEN  Auto  THEN  Fold  `comm`  (-1)  THEN  Auto)

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