Nuprl Lemma : int-to-ring_wf
∀[r:Rng]. ∀[n:ℤ].  (int-to-ring(r;n) ∈ |r|)
Proof
Definitions occuring in Statement : 
int-to-ring: int-to-ring(r;n), 
rng: Rng, 
rng_car: |r|, 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
int: ℤ
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
int-to-ring: int-to-ring(r;n), 
all: ∀x:A. B[x], 
implies: P ⇒ Q, 
bool: 𝔹, 
unit: Unit, 
it: ⋅, 
btrue: tt, 
subtype_rel: A ⊆r B, 
uiff: uiff(P;Q), 
and: P ∧ Q, 
uimplies: b supposing a, 
ifthenelse: if b then t else f fi , 
rng: Rng, 
nat: ℕ, 
decidable: Dec(P), 
or: P ∨ Q, 
satisfiable_int_formula: satisfiable_int_formula(fmla), 
exists: ∃x:A. B[x], 
false: False, 
not: ¬A, 
top: Top, 
prop: ℙ, 
bfalse: ff, 
guard: {T}
Lemmas referenced : 
lt_int_wf, 
bool_wf, 
uiff_transitivity, 
equal-wf-base, 
int_subtype_base, 
assert_wf, 
less_than_wf, 
eqtt_to_assert, 
assert_of_lt_int, 
rng_minus_wf, 
rng_nat_op_wf, 
decidable__le, 
satisfiable-full-omega-tt, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_wf, 
itermMinus_wf, 
itermVar_wf, 
intformless_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma, 
int_term_value_minus_lemma, 
int_term_value_var_lemma, 
int_formula_prop_less_lemma, 
int_formula_prop_wf, 
le_wf, 
rng_one_wf, 
le_int_wf, 
bnot_wf, 
eqff_to_assert, 
assert_functionality_wrt_uiff, 
bnot_of_lt_int, 
assert_of_le_int, 
equal_wf, 
rng_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
sqequalRule, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesisEquality, 
natural_numberEquality, 
hypothesis, 
lambdaFormation, 
unionElimination, 
equalityElimination, 
baseApply, 
closedConclusion, 
baseClosed, 
applyEquality, 
independent_functionElimination, 
because_Cache, 
productElimination, 
independent_isectElimination, 
setElimination, 
rename, 
dependent_set_memberEquality, 
dependent_functionElimination, 
minusEquality, 
dependent_pairFormation, 
lambdaEquality, 
int_eqEquality, 
intEquality, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
independent_pairFormation, 
computeAll, 
equalityTransitivity, 
equalitySymmetry, 
axiomEquality
Latex:
\mforall{}[r:Rng].  \mforall{}[n:\mBbbZ{}].    (int-to-ring(r;n)  \mmember{}  |r|)
Date html generated:
2017_10_01-AM-08_18_55
Last ObjectModification:
2017_02_28-PM-02_03_43
Theory : rings_1
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