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Step * of Lemma topeq_inversion

∀X:Space. ∀a,b:|X|.  (topeq(X;a;b) ⇒ topeq(X;b;a))
BY
{ ((InstLemma `topeq-equiv` [] THEN ParallelLast') THEN D -1 THEN Auto) }

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Latex:

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Latex:
\mforall{}X:Space.  \mforall{}a,b:|X|.    (topeq(X;a;b)  {}\mRightarrow{}  topeq(X;b;a))


By

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Latex:
((InstLemma  `topeq-equiv`  []  THEN  ParallelLast')  THEN  D  -1  THEN  Auto)

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