Nuprl Lemma : es-knows-not

∀[poss:EO ─→ ℙ']. ∀[R:PossibleEvent(poss) ─→ PossibleEvent(poss) ─→ ℙ'].
  (EquivRel(PossibleEvent(poss))(R _1 _2)
  ⇒ (∀[P:PossibleEvent(poss) ─→ ℙ']. ∀e:PossibleEvent(poss). K(λe.(¬K(P)@e))@e supposing ¬K(P)@e))


Proof




Definitions occuring in Statement :  es-knows: K(P)@e,  possible-event: PossibleEvent(poss),  event_ordering: EO,  equiv_rel: EquivRel(T;x,y.E[x; y]),  uimplies: b supposing a,  uall: ∀[x:A]. B[x],  prop: ℙ,  all: ∀x:A. B[x],  not: ¬A,  implies: P ⇒ Q,  apply: f a,  lambda: λx.A[x],  function: x:A ─→ B[x]
Lemmas :  all_wf,  possible-event_wf,  not_wf,  equiv_rel_wf,  event_ordering_wf
\mforall{}[poss:EO  {}\mrightarrow{}  \mBbbP{}'].  \mforall{}[R:PossibleEvent(poss)  {}\mrightarrow{}  PossibleEvent(poss)  {}\mrightarrow{}  \mBbbP{}'].
    (EquivRel(PossibleEvent(poss))(R  $_{1}$  $_{2}$)
    {}\mRightarrow{}  (\mforall{}[P:PossibleEvent(poss)  {}\mrightarrow{}  \mBbbP{}'].  \mforall{}e:PossibleEvent(poss).  K(\mlambda{}e.(\mneg{}K(P)@e))@e  supposing  \mneg{}K(P)@e))



Date html generated: 2015_07_17-AM-08_52_09
Last ObjectModification: 2015_01_27-PM-01_17_46

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