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 ⊆B all: x:A. B[x] implies:  Q bool: 𝔹 unit: Unit it: btrue: tt uiff: uiff(P;Q) and: P ∧ Q uimplies: supposing a ifthenelse: if then else fi  bfalse: ff exists: x:A. B[x] prop: or: P ∨ Q sq_type: SQType(T) guard: {T} bnot: ¬bb assert: b false: False so_lambda: λ2y.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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