Step * of Lemma radd_wf

[a,b:ℝ].  (a b ∈ ℝ)
BY
ProveWfLemma }


Latex:


Latex:
\mforall{}[a,b:\mBbbR{}].    (a  +  b  \mmember{}  \mBbbR{})


By


Latex:
ProveWfLemma




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