Nuprl Lemma : consensus-ts4-ref-map1

[V:Type]
  ((∃v,v':V. (v v' ∈ V)))
   (∀v,v':V.  Dec(v v' ∈ V))
   (∀A:Id List. ∀W:{a:Id| (a ∈ A)}  List List.
        (two-intersection(A;W)
         {∀s:ConsensusState. ∀i:ℤ.
              ∃x:consensus-state3(V)
               ((x INITIAL ∈ consensus-state3(V)
                ⇐⇒ ∃v,v':V
                     ((¬(v v' ∈ V)) ∧ in state s, inning could commit v  ∧ in state s, inning could commit v' ))
               ∧ (x WITHDRAWN ∈ consensus-state3(V) ⇐⇒ ¬(∃v:V. in state s, inning could commit ))
               ∧ (∀v:V
                    ((x COMMITED[v] ∈ consensus-state3(V) ⇐⇒ in state s, inning has committed v)
                    ∧ (x CONSIDERING[v] ∈ consensus-state3(V)
                      ⇐⇒ in state s, inning could commit 
                          ∧ in state s, inning has committed v)
                          ∧ (∀v':V. (in state s, inning could commit v'   (v' v ∈ V)))))))})))


Proof




Definitions occuring in Statement :  two-intersection: two-intersection(A;W) cs-inning-committable: in state s, inning could commit  cs-inning-committed: in state s, inning has committed v consensus-state4: ConsensusState cs-commited: COMMITED[v] cs-considering: CONSIDERING[v] cs-withdrawn: WITHDRAWN cs-initial: INITIAL consensus-state3: consensus-state3(T) Id: Id l_member: (x ∈ l) list: List decidable: Dec(P) uall: [x:A]. B[x] guard: {T} all: x:A. B[x] exists: x:A. B[x] iff: ⇐⇒ Q not: ¬A implies:  Q and: P ∧ Q set: {x:A| B[x]}  int: universe: Type equal: t ∈ T
Lemmas :  l_member_wf Id_wf select_wf list_wf sq_stable__le int_seg_wf length_wf two-intersection_wf all_wf decidable_wf equal_wf exists_wf not_wf decidable__cs-inning-two-committable decidable__cs-inning-committed decidable__cs-inning-committable-some consensus-state4_wf consensus-state3-unequal cs-commited_wf equal-wf-T-base consensus-state3_wf cs-inning-committable_wf cs-inning-committed_wf cs-considering_wf iff_wf cs-inning-committed-single and_wf equal-wf-base-T equal-wf-base cs-initial_wf btrue_neq_bfalse bool_wf isl_wf bfalse_wf btrue_wf assert_wf outl_wf cs-withdrawn_wf cs-archived_wf or_wf set_wf cs-not-completed_wf
\mforall{}[V:Type]
    ((\mexists{}v,v':V.  (\mneg{}(v  =  v')))
    {}\mRightarrow{}  (\mforall{}v,v':V.    Dec(v  =  v'))
    {}\mRightarrow{}  (\mforall{}A:Id  List.  \mforall{}W:\{a:Id|  (a  \mmember{}  A)\}    List  List.
                (two-intersection(A;W)
                {}\mRightarrow{}  \{\mforall{}s:ConsensusState.  \mforall{}i:\mBbbZ{}.
                            \mexists{}x:consensus-state3(V)
                              ((x  =  INITIAL
                                \mLeftarrow{}{}\mRightarrow{}  \mexists{}v,v':V
                                          ((\mneg{}(v  =  v'))
                                          \mwedge{}  in  state  s,  inning  i  could  commit  v 
                                          \mwedge{}  in  state  s,  inning  i  could  commit  v'  ))
                              \mwedge{}  (x  =  WITHDRAWN  \mLeftarrow{}{}\mRightarrow{}  \mneg{}(\mexists{}v:V.  in  state  s,  inning  i  could  commit  v  ))
                              \mwedge{}  (\mforall{}v:V
                                        ((x  =  COMMITED[v]  \mLeftarrow{}{}\mRightarrow{}  in  state  s,  inning  i  has  committed  v)
                                        \mwedge{}  (x  =  CONSIDERING[v]
                                            \mLeftarrow{}{}\mRightarrow{}  in  state  s,  inning  i  could  commit  v 
                                                    \mwedge{}  (\mneg{}in  state  s,  inning  i  has  committed  v)
                                                    \mwedge{}  (\mforall{}v':V.  (in  state  s,  inning  i  could  commit  v'    {}\mRightarrow{}  (v'  =  v)))))))\})))



Date html generated: 2015_07_17-AM-11_32_03
Last ObjectModification: 2015_07_16-AM-09_48_02

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