Nuprl Lemma : but-first-class_wf
∀[Info,A:Type]. ∀[X:EClass(A)].  (Skip-e(X) ∈ EClass(A))
Proof
Definitions occuring in Statement : 
but-first-class: Skip-e(X), 
eclass: EClass(A[eo; e]), 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
universe: Type
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
but-first-class: Skip-e(X), 
eclass: EClass(A[eo; e]), 
subtype_rel: A ⊆r B, 
all: ∀x:A. B[x], 
implies: P ⇒ Q, 
bool: 𝔹, 
unit: Unit, 
it: ⋅, 
btrue: tt, 
uiff: uiff(P;Q), 
and: P ∧ Q, 
uimplies: b supposing a, 
ifthenelse: if b then t else f fi , 
bfalse: ff, 
exists: ∃x:A. B[x], 
prop: ℙ, 
or: P ∨ Q, 
sq_type: SQType(T), 
guard: {T}, 
bnot: ¬bb, 
assert: ↑b, 
false: False, 
so_lambda: λ2x y.t[x; y], 
so_apply: x[s1;s2]
Latex:
\mforall{}[Info,A:Type].  \mforall{}[X:EClass(A)].    (Skip-e(X)  \mmember{}  EClass(A))
Date html generated:
2016_05_16-PM-11_24_54
Last ObjectModification:
2015_12_29-AM-10_22_55
Theory : event-ordering
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