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Step * 1 of Lemma crng_properties


1. r : CRng
⊢ Comm(|r|;*)
BY
{ BasicAbSetHD 1 }

1
1. r : Rng
2. [%1] : Comm(|r|;*)
⊢ Comm(|r|;*)

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Latex:

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Latex:

1.  r  :  CRng
\mvdash{}  Comm(|r|;*)


By

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Latex:
BasicAbSetHD  1

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