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Step * of Lemma ex-sqle-basecase

∀[e:Atom2]. ∀[v,t':Base].  ex-sqle(e;exception(e; v);t')
BY
{ (Auto THEN Unfold `ex-sqle` 0 THEN RWO "subst-exc-basecase" 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[e:Atom2].  \mforall{}[v,t':Base].    ex-sqle(e;exception(e;  v);t')


By

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Latex:
(Auto  THEN  Unfold  `ex-sqle`  0  THEN  RWO  "subst-exc-basecase"  0  THEN  Auto)

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