Nuprl Lemma : ratLegendre-aux_wf
∀[x:ℤ × ℕ+]. ∀[n:ℕ+]. ∀[tr:k:ℕ+n + 1
                           × {a:ℤ × ℕ+| ratreal(a) = Legendre(k;ratreal(x))} 
                           × {b:ℤ × ℕ+| ratreal(b) = Legendre(k - 1;ratreal(x))} ].
  (ratLegendre-aux(n;x;tr) ∈ {y:ℤ × ℕ+| ratreal(y) = Legendre(n;ratreal(x))} )
Proof
Definitions occuring in Statement : 
ratLegendre-aux: ratLegendre-aux(n;x;tr)
, 
Legendre: Legendre(n;x)
, 
ratreal: ratreal(r)
, 
req: x = y
, 
int_seg: {i..j-}
, 
nat_plus: ℕ+
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
set: {x:A| B[x]} 
, 
product: x:A × B[x]
, 
subtract: n - m
, 
add: n + m
, 
natural_number: $n
, 
int: ℤ
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
all: ∀x:A. B[x]
, 
nat: ℕ
, 
implies: P 
⇒ Q
, 
false: False
, 
ge: i ≥ j 
, 
uimplies: b supposing a
, 
not: ¬A
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
top: Top
, 
and: P ∧ Q
, 
prop: ℙ
, 
ratLegendre-aux: ratLegendre-aux(n;x;tr)
, 
spreadn: spread3, 
nat_plus: ℕ+
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
sq_type: SQType(T)
, 
guard: {T}
, 
subtype_rel: A ⊆r B
, 
so_lambda: λ2x.t[x]
, 
so_apply: x[s]
, 
has-value: (a)↓
, 
int_nzero: ℤ-o
, 
nequal: a ≠ b ∈ T 
, 
Legendre: Legendre(n;x)
, 
squash: ↓T
, 
true: True
, 
iff: P 
⇐⇒ Q
, 
rev_implies: P 
⇐ Q
, 
ifthenelse: if b then t else f fi 
, 
bfalse: ff
, 
subtract: n - m
, 
uiff: uiff(P;Q)
, 
rev_uimplies: rev_uimplies(P;Q)
, 
rsub: x - y
, 
int_seg: {i..j-}
, 
lelt: i ≤ j < k
, 
pi1: fst(t)
, 
le: A ≤ B
, 
less_than': less_than'(a;b)
Lemmas referenced : 
nat_plus_wf, 
istype-int, 
nat_properties, 
full-omega-unsat, 
intformand_wf, 
intformle_wf, 
itermConstant_wf, 
itermVar_wf, 
intformless_wf, 
int_formula_prop_and_lemma, 
istype-void, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma, 
int_term_value_var_lemma, 
int_formula_prop_less_lemma, 
int_formula_prop_wf, 
ge_wf, 
istype-less_than, 
nat_plus_properties, 
decidable__equal_int, 
intformnot_wf, 
intformeq_wf, 
itermAdd_wf, 
int_formula_prop_not_lemma, 
int_formula_prop_eq_lemma, 
int_term_value_add_lemma, 
subtype_base_sq, 
int_subtype_base, 
req_wf, 
ratreal_wf, 
Legendre_wf, 
decidable__le, 
istype-le, 
set_subtype_base, 
less_than_wf, 
subtract_wf, 
itermSubtract_wf, 
int_term_value_subtract_lemma, 
subtract-1-ge-0, 
value-type-has-value, 
int-value-type, 
int-rdiv_wf, 
nequal_wf, 
ratadd_wf, 
int-rat-mul_wf, 
ratmul_wf, 
set-value-type, 
product-value-type, 
rat-nat-div_wf, 
decidable__lt, 
bool_wf, 
bool_subtype_base, 
equal_wf, 
squash_wf, 
true_wf, 
istype-universe, 
eq_int_eq_false, 
bfalse_wf, 
subtype_rel_self, 
iff_weakening_equal, 
add-subtract-cancel, 
itermMultiply_wf, 
int_term_value_mul_lemma, 
add-associates, 
add-swap, 
add-commutes, 
zero-add, 
istype-nat, 
radd_wf, 
int-rmul_wf, 
rmul_wf, 
rsub_wf, 
nat_plus_subtype_nat, 
req_functionality, 
req_transitivity, 
ratreal-rat-nat-div, 
int-rdiv_functionality, 
ratreal-ratadd, 
radd_functionality, 
ratreal-int-rat-mul, 
int-rmul_functionality, 
ratreal-ratmul, 
req_weakening, 
rminus_wf, 
rminus_functionality, 
req_inversion, 
rmul_functionality, 
int-to-real_wf, 
rmul_over_rminus, 
int-rmul-req, 
real_wf, 
rminus-int, 
pi1_wf_top, 
subtract_nat_wf, 
int_seg_wf, 
int_seg_properties, 
subtract-is-int-iff, 
false_wf, 
lelt_wf, 
subtype_rel_set, 
nat_wf, 
equal-wf-base, 
int_seg_subtype_nat, 
istype-false
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation_alt, 
cut, 
universeIsType, 
introduction, 
extract_by_obid, 
hypothesis, 
productIsType, 
lambdaFormation_alt, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesisEquality, 
setElimination, 
rename, 
sqequalRule, 
intWeakElimination, 
natural_numberEquality, 
independent_isectElimination, 
approximateComputation, 
independent_functionElimination, 
dependent_pairFormation_alt, 
lambdaEquality_alt, 
int_eqEquality, 
dependent_functionElimination, 
isect_memberEquality_alt, 
voidElimination, 
independent_pairFormation, 
axiomEquality, 
equalityTransitivity, 
equalitySymmetry, 
isectIsTypeImplies, 
inhabitedIsType, 
functionIsTypeImplies, 
productElimination, 
because_Cache, 
unionElimination, 
int_eqReduceTrueSq, 
instantiate, 
cumulativity, 
intEquality, 
dependent_set_memberEquality_alt, 
setIsType, 
equalityIstype, 
baseApply, 
closedConclusion, 
baseClosed, 
applyEquality, 
sqequalBase, 
int_eqReduceFalseSq, 
callbyvalueReduce, 
addEquality, 
setEquality, 
productEquality, 
multiplyEquality, 
minusEquality, 
dependent_pairEquality_alt, 
independent_pairEquality, 
imageElimination, 
universeEquality, 
imageMemberEquality, 
applyLambdaEquality, 
pointwiseFunctionality, 
promote_hyp
Latex:
\mforall{}[x:\mBbbZ{}  \mtimes{}  \mBbbN{}\msupplus{}].  \mforall{}[n:\mBbbN{}\msupplus{}].  \mforall{}[tr:k:\mBbbN{}\msupplus{}n  +  1
                                                      \mtimes{}  \{a:\mBbbZ{}  \mtimes{}  \mBbbN{}\msupplus{}|  ratreal(a)  =  Legendre(k;ratreal(x))\} 
                                                      \mtimes{}  \{b:\mBbbZ{}  \mtimes{}  \mBbbN{}\msupplus{}|  ratreal(b)  =  Legendre(k  -  1;ratreal(x))\}  ].
    (ratLegendre-aux(n;x;tr)  \mmember{}  \{y:\mBbbZ{}  \mtimes{}  \mBbbN{}\msupplus{}|  ratreal(y)  =  Legendre(n;ratreal(x))\}  )
Date html generated:
2019_10_30-AM-11_34_07
Last ObjectModification:
2019_01_11-AM-10_30_29
Theory : reals_2
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