Nuprl Lemma : es-E-interfaces-strong-subtype
∀[Info:Type]. ∀[es:EO+(Info)]. ∀[X,Y:EClass(Top)]. uiff(E(X) ⊆r E(Y);strong-subtype(E(X);E(Y)))
Proof
Definitions occuring in Statement :
es-E-interface: E(X),
eclass: EClass(A[eo; e]),
event-ordering+: EO+(Info),
strong-subtype: strong-subtype(A;B),
uiff: uiff(P;Q),
subtype_rel: A ⊆r B,
uall: ∀[x:A]. B[x],
top: Top,
universe: Type
Definitions unfolded in proof :
uiff: uiff(P;Q),
and: P ∧ Q,
uimplies: b supposing a,
member: t ∈ T,
uall: ∀[x:A]. B[x],
implies: P ⇒ Q,
subtype_rel: A ⊆r B,
prop: ℙ,
so_lambda: λ2x y.t[x; y],
so_apply: x[s1;s2],
strong-subtype: strong-subtype(A;B),
cand: A c∧ B,
so_lambda: λ2x.t[x],
so_apply: x[s],
exists: ∃x:A. B[x],
es-E-interface: E(X),
sq_type: SQType(T),
all: ∀x:A. B[x],
guard: {T},
assert: ↑b,
ifthenelse: if b then t else f fi ,
btrue: tt,
true: True
Latex:
\mforall{}[Info:Type]. \mforall{}[es:EO+(Info)]. \mforall{}[X,Y:EClass(Top)]. uiff(E(X) \msubseteq{}r E(Y);strong-subtype(E(X);E(Y)))
Date html generated:
2016_05_16-PM-02_51_19
Last ObjectModification:
2015_12_29-AM-11_24_43
Theory : event-ordering
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