Nuprl Lemma : coded-seq_wf
∀x:ℕ. (coded-seq(x) ∈ k:ℕ × (ℕk ⟶ ℕ))
Proof
Definitions occuring in Statement : 
coded-seq: coded-seq(x)
, 
int_seg: {i..j-}
, 
nat: ℕ
, 
all: ∀x:A. B[x]
, 
member: t ∈ T
, 
function: x:A ⟶ B[x]
, 
product: x:A × B[x]
, 
natural_number: $n
Definitions unfolded in proof : 
all: ∀x:A. B[x]
, 
member: t ∈ T
, 
coded-seq: coded-seq(x)
, 
uall: ∀[x:A]. B[x]
, 
nat: ℕ
, 
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 
, 
le: A ≤ B
, 
less_than': less_than'(a;b)
, 
false: False
, 
not: ¬A
, 
prop: ℙ
, 
subtype_rel: A ⊆r B
, 
bfalse: ff
, 
iff: P 
⇐⇒ Q
, 
rev_implies: P 
⇐ Q
, 
ge: i ≥ j 
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
top: Top
Lemmas referenced : 
eq_int_wf, 
bool_wf, 
uiff_transitivity, 
equal-wf-T-base, 
assert_wf, 
eqtt_to_assert, 
assert_of_eq_int, 
false_wf, 
le_wf, 
int_seg_subtype_nat, 
int_seg_wf, 
nat_wf, 
iff_transitivity, 
bnot_wf, 
not_wf, 
iff_weakening_uiff, 
eqff_to_assert, 
assert_of_bnot, 
coded-pair_wf, 
subtract_wf, 
nat_properties, 
decidable__le, 
satisfiable-full-omega-tt, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_wf, 
itermSubtract_wf, 
itermVar_wf, 
intformeq_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma, 
int_term_value_subtract_lemma, 
int_term_value_var_lemma, 
int_formula_prop_eq_lemma, 
int_formula_prop_wf, 
itermAdd_wf, 
int_term_value_add_lemma, 
coded-seq1_wf, 
equal_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
lambdaFormation, 
cut, 
sqequalRule, 
introduction, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
setElimination, 
rename, 
hypothesisEquality, 
hypothesis, 
natural_numberEquality, 
unionElimination, 
equalityElimination, 
equalityTransitivity, 
equalitySymmetry, 
baseClosed, 
because_Cache, 
intEquality, 
independent_functionElimination, 
productElimination, 
independent_isectElimination, 
dependent_pairEquality, 
dependent_set_memberEquality, 
independent_pairFormation, 
lambdaEquality, 
applyEquality, 
functionEquality, 
impliesFunctionality, 
dependent_functionElimination, 
dependent_pairFormation, 
int_eqEquality, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
computeAll, 
productEquality, 
addEquality
Latex:
\mforall{}x:\mBbbN{}.  (coded-seq(x)  \mmember{}  k:\mBbbN{}  \mtimes{}  (\mBbbN{}k  {}\mrightarrow{}  \mBbbN{}))
Date html generated:
2019_06_20-PM-02_40_28
Last ObjectModification:
2019_06_12-PM-00_28_29
Theory : num_thy_1
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