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Step * of Lemma crng_times_ac_1

∀[r:CRng]. ∀[a,b,c:|r|].  ((a * (b * c)) = (b * (a * c)) ∈ |r|)
BY
{ ProveSpecializedLemma `abmonoid_ac_1` 1 [parm{i};r↓xmn] (AbReduceC) }

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Latex:

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Latex:
\mforall{}[r:CRng].  \mforall{}[a,b,c:|r|].    ((a  *  (b  *  c))  =  (b  *  (a  *  c)))


By

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Latex:
ProveSpecializedLemma  `abmonoid\_ac\_1`  1  [parm\{i\};r\mdownarrow{}xmn]  (AbReduceC)

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