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Step * of Lemma possible-event_wf

∀[poss:EO ⟶ ℙ']. (PossibleEvent(poss) ∈ ℙ')
BY
{ (Unfold `possible-event` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[poss:EO  {}\mrightarrow{}  \mBbbP{}'].  (PossibleEvent(poss)  \mmember{}  \mBbbP{}')


By

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Latex:
(Unfold  `possible-event`  0  THEN  Auto)

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