Nuprl Lemma : member-p-union

∀p:FinProbSpace. ∀A,B:p-open(p). ∀s:ℕ ─→ Outcome.  (s ∈ p-union(A;B) ⇐⇒ s ∈ A ∨ s ∈ B)


Proof




Definitions occuring in Statement :  p-union: p-union(A;B),  p-open-member: s ∈ C,  p-open: p-open(p),  p-outcome: Outcome,  finite-prob-space: FinProbSpace,  nat: ℕ,  all: ∀x:A. B[x],  iff: P ⇐⇒ Q,  or: P ∨ Q,  function: x:A ─→ B[x]
Lemmas :  exists_wf,  nat_wf,  equal-wf-T-base,  eq_int_wf,  subtype_rel_dep_function,  p-outcome_wf,  int_seg_wf,  int_seg_subtype-nat,  false_wf,  subtype_rel_self,  bool_wf,  eqtt_to_assert,  assert_of_eq_int,  eqff_to_assert,  equal_wf,  bool_cases_sqequal,  subtype_base_sq,  bool_subtype_base,  assert-bnot,  neg_assert_of_eq_int,  or_wf,  set_wf,  all_wf,  le_wf,  finite-prob-space_wf,  assert_wf,  bnot_wf,  not_wf,  bool_cases,  iff_transitivity,  iff_weakening_uiff,  assert_of_bnot,  int_subtype_base,  uiff_transitivity
\mforall{}p:FinProbSpace.  \mforall{}A,B:p-open(p).  \mforall{}s:\mBbbN{}  {}\mrightarrow{}  Outcome.    (s  \mmember{}  p-union(A;B)  \mLeftarrow{}{}\mRightarrow{}  s  \mmember{}  A  \mvee{}  s  \mmember{}  B)



Date html generated: 2015_07_17-AM-08_00_29
Last ObjectModification: 2015_01_27-AM-11_22_23

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