Nuprl Lemma : bag_remove1_aux_wf
∀[T:Type]. ∀[eq:EqDecider(T)]. ∀[x:T]. ∀[bs,checked:T List].  (bag_remove1_aux(eq;checked;x;bs) ∈ T List?)
Proof
Definitions occuring in Statement : 
bag_remove1_aux: bag_remove1_aux(eq;checked;a;as), 
list: T List, 
deq: EqDecider(T), 
uall: ∀[x:A]. B[x], 
unit: Unit, 
member: t ∈ T, 
union: left + right, 
universe: Type
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, 
satisfiable_int_formula: satisfiable_int_formula(fmla), 
exists: ∃x:A. B[x], 
not: ¬A, 
top: Top, 
and: P ∧ Q, 
prop: ℙ, 
subtype_rel: A ⊆r B, 
guard: {T}, 
or: P ∨ Q, 
bag_remove1_aux: bag_remove1_aux(eq;checked;a;as), 
so_lambda: so_lambda(x,y,z.t[x; y; z]), 
so_apply: x[s1;s2;s3], 
unit: Unit, 
cons: [a / b], 
colength: colength(L), 
so_lambda: λ2x y.t[x; y], 
so_apply: x[s1;s2], 
decidable: Dec(P), 
nil: [], 
it: ⋅, 
so_lambda: λ2x.t[x], 
so_apply: x[s], 
sq_type: SQType(T), 
less_than: a < b, 
squash: ↓T, 
less_than': less_than'(a;b), 
deq: EqDecider(T), 
bool: 𝔹, 
btrue: tt, 
ifthenelse: if b then t else f fi , 
uiff: uiff(P;Q), 
eqof: eqof(d), 
bfalse: ff, 
bnot: ¬bb, 
assert: ↑b
Lemmas referenced : 
nat_properties, 
satisfiable-full-omega-tt, 
intformand_wf, 
intformle_wf, 
itermConstant_wf, 
itermVar_wf, 
intformless_wf, 
int_formula_prop_and_lemma, 
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, 
less_than_wf, 
equal-wf-T-base, 
nat_wf, 
colength_wf_list, 
less_than_transitivity1, 
less_than_irreflexivity, 
list-cases, 
list_ind_nil_lemma, 
list_wf, 
product_subtype_list, 
spread_cons_lemma, 
intformeq_wf, 
itermAdd_wf, 
int_formula_prop_eq_lemma, 
int_term_value_add_lemma, 
decidable__le, 
intformnot_wf, 
int_formula_prop_not_lemma, 
le_wf, 
equal_wf, 
subtract_wf, 
itermSubtract_wf, 
int_term_value_subtract_lemma, 
subtype_base_sq, 
set_subtype_base, 
int_subtype_base, 
decidable__equal_int, 
list_ind_cons_lemma, 
bool_wf, 
eqtt_to_assert, 
safe-assert-deq, 
append_wf, 
unit_wf2, 
eqff_to_assert, 
bool_cases_sqequal, 
bool_subtype_base, 
assert-bnot, 
cons_wf, 
deq_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
thin, 
lambdaFormation, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
hypothesisEquality, 
hypothesis, 
setElimination, 
rename, 
sqequalRule, 
intWeakElimination, 
natural_numberEquality, 
independent_isectElimination, 
dependent_pairFormation, 
lambdaEquality, 
int_eqEquality, 
intEquality, 
dependent_functionElimination, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
independent_pairFormation, 
computeAll, 
independent_functionElimination, 
axiomEquality, 
equalityTransitivity, 
equalitySymmetry, 
because_Cache, 
cumulativity, 
applyEquality, 
unionElimination, 
inrEquality, 
promote_hyp, 
hypothesis_subsumption, 
productElimination, 
applyLambdaEquality, 
dependent_set_memberEquality, 
addEquality, 
baseClosed, 
instantiate, 
imageElimination, 
equalityElimination, 
inlEquality, 
universeEquality
Latex:
\mforall{}[T:Type].  \mforall{}[eq:EqDecider(T)].  \mforall{}[x:T].  \mforall{}[bs,checked:T  List].
    (bag\_remove1\_aux(eq;checked;x;bs)  \mmember{}  T  List?)
Date html generated:
2018_05_21-PM-09_47_57
Last ObjectModification:
2017_07_26-PM-06_30_30
Theory : bags_2
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