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Step * of Lemma vs-add-comm

∀K:RngSig. ∀vs:VectorSpace(K). ∀x,y:Point(vs).  (x + y = y + x ∈ Point(vs))
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Latex:

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Latex:
\mforall{}K:RngSig.  \mforall{}vs:VectorSpace(K).  \mforall{}x,y:Point(vs).    (x  +  y  =  y  +  x)


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Latex:
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