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Step * of Lemma vs-neg-add

∀[K:Rng]. ∀[vs:VectorSpace(K)]. ∀[x:Point(vs)].  (-(x) + x = 0 ∈ Point(vs))
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Latex:

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Latex:
\mforall{}[K:Rng].  \mforall{}[vs:VectorSpace(K)].  \mforall{}[x:Point(vs)].    (-(x)  +  x  =  0)


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