Nuprl Lemma : Accum-classrel-Memory
∀[Info,B,A:Type]. ∀[f:A ⟶ B ⟶ B]. ∀[init:Id ⟶ bag(B)]. ∀[X:EClass(A)]. ∀[es:EO+(Info)]. ∀[e:E]. ∀[v:B].
(v ∈ Accum-class(f;init;X)(e) ⇐⇒ ↓∃a:A. ∃b:B. (a ∈ X(e) ∧ b ∈ Memory-class(f;init;X)(e) ∧ (v = (f a b) ∈ B)))
Proof
Definitions occuring in Statement :
Memory-class: Memory-class(f;init;X),
Accum-class: Accum-class(f;init;X),
classrel: v ∈ X(e),
eclass: EClass(A[eo; e]),
event-ordering+: EO+(Info),
es-E: E,
Id: Id,
uall: ∀[x:A]. B[x],
exists: ∃x:A. B[x],
iff: P ⇐⇒ Q,
squash: ↓T,
and: P ∧ Q,
apply: f a,
function: x:A ⟶ B[x],
universe: Type,
equal: s = t ∈ T,
bag: bag(T)
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
top: Top,
classrel: v ∈ X(e),
iff: P ⇐⇒ Q,
and: P ∧ Q,
implies: P ⇒ Q,
prop: ℙ,
so_lambda: λ2x.t[x],
so_apply: x[s],
rev_implies: P ⇐ Q,
eclass: EClass(A[eo; e]),
subtype_rel: A ⊆r B,
so_lambda: λ2x y.t[x; y],
so_apply: x[s1;s2],
exists: ∃x:A. B[x],
squash: ↓T,
bag-member: x ↓∈ bs,
uiff: uiff(P;Q),
uimplies: b supposing a
Latex:
\mforall{}[Info,B,A:Type]. \mforall{}[f:A {}\mrightarrow{} B {}\mrightarrow{} B]. \mforall{}[init:Id {}\mrightarrow{} bag(B)]. \mforall{}[X:EClass(A)]. \mforall{}[es:EO+(Info)]. \mforall{}[e:E].
\mforall{}[v:B].
(v \mmember{} Accum-class(f;init;X)(e)
\mLeftarrow{}{}\mRightarrow{} \mdownarrow{}\mexists{}a:A. \mexists{}b:B. (a \mmember{} X(e) \mwedge{} b \mmember{} Memory-class(f;init;X)(e) \mwedge{} (v = (f a b))))
Date html generated:
2016_05_17-AM-09_21_54
Last ObjectModification:
2016_01_17-PM-11_11_53
Theory : classrel!lemmas
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