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Step * of Lemma rinv_wf2

∀[x:ℝ]. (x ≠ r0 ⇒ (rinv(x) ∈ ℝ))
BY
{ (Auto THEN BLemma `rnonzero-iff` THEN Auto) }

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Latex:

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Latex:
\mforall{}[x:\mBbbR{}].  (x  \mneq{}  r0  {}\mRightarrow{}  (rinv(x)  \mmember{}  \mBbbR{}))


By

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Latex:
(Auto  THEN  BLemma  `rnonzero-iff`  THEN  Auto)

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