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Step * of Lemma rng_minus_zero

∀[r:Rng]. ((-r 0) = 0 ∈ |r|)
BY
{ ProveSpecializedLemma `grp_inv_id` 1 [parm{i};r↓+gp] (AbReduceC) }

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Latex:

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Latex:
\mforall{}[r:Rng].  ((-r  0)  =  0)


By

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Latex:
ProveSpecializedLemma  `grp\_inv\_id`  1  [parm\{i\};r\mdownarrow{}+gp]  (AbReduceC)

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