Nuprl Lemma : MTree_Node-labels_wf
∀[T:Type]. ∀[v:MultiTree(T)]. MTree_Node-labels(v) ∈ {L:Atom List| 0 < ||L||} supposing ↑MTree_Node?(v)
Proof
Definitions occuring in Statement :
MTree_Node-labels: MTree_Node-labels(v),
MTree_Node?: MTree_Node?(v),
MultiTree: MultiTree(T),
length: ||as||,
list: T List,
assert: ↑b,
less_than: a < b,
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
member: t ∈ T,
set: {x:A| B[x]} ,
natural_number: $n,
atom: Atom,
universe: Type
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
uimplies: b supposing a,
member: t ∈ T,
ext-eq: A ≡ B,
and: P ∧ Q,
subtype_rel: A ⊆r B,
all: ∀x:A. B[x],
implies: P ⇒ Q,
bool: 𝔹,
unit: Unit,
it: ⋅,
btrue: tt,
uiff: uiff(P;Q),
sq_type: SQType(T),
guard: {T},
eq_atom: x =a y,
ifthenelse: if b then t else f fi ,
MTree_Node?: MTree_Node?(v),
pi1: fst(t),
assert: ↑b,
MTree_Node-labels: MTree_Node-labels(v),
pi2: snd(t),
bfalse: ff,
exists: ∃x:A. B[x],
prop: ℙ,
or: P ∨ Q,
bnot: ¬bb,
false: False
Lemmas referenced :
MultiTree-ext,
eq_atom_wf,
bool_wf,
eqtt_to_assert,
assert_of_eq_atom,
subtype_base_sq,
atom_subtype_base,
eqff_to_assert,
equal_wf,
bool_cases_sqequal,
bool_subtype_base,
assert-bnot,
neg_assert_of_eq_atom,
assert_wf,
MTree_Node?_wf,
MultiTree_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation,
cut,
lemma_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
promote_hyp,
productElimination,
hypothesis_subsumption,
hypothesis,
applyEquality,
sqequalRule,
tokenEquality,
lambdaFormation,
unionElimination,
equalityElimination,
equalityTransitivity,
equalitySymmetry,
independent_isectElimination,
instantiate,
cumulativity,
atomEquality,
dependent_functionElimination,
independent_functionElimination,
because_Cache,
dependent_pairFormation,
voidElimination,
equalityEquality,
universeEquality
Latex:
\mforall{}[T:Type]. \mforall{}[v:MultiTree(T)]. MTree\_Node-labels(v) \mmember{} \{L:Atom List| 0 < ||L||\} supposing \muparrow{}MTree\_Nod\000Ce?(v)
Date html generated:
2016_05_16-AM-08_53_09
Last ObjectModification:
2015_12_28-PM-06_54_01
Theory : C-semantics
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