Nuprl Lemma : istype-mrecind
∀[L:MutualRectypeSpec]. ∀[P:mobj(L) ⟶ TYPE]. istype(mrecind(L;x.P[x]))
Proof
Definitions occuring in Statement :
mrecind: mrecind(L;x.P[x]),
mobj: mobj(L),
mrec_spec: MutualRectypeSpec,
istype: istype(T),
uall: ∀[x:A]. B[x],
so_apply: x[s],
function: x:A ⟶ B[x]
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
mrecind: mrecind(L;x.P[x]),
all: ∀x:A. B[x],
member: t ∈ T,
mkinds: mKinds,
prec-arg-types: prec-arg-types(lbl,p.a[lbl; p];i;lbl),
implies: P ⇒ Q,
so_lambda: λ2x y.t[x; y],
so_apply: x[s1;s2],
int_seg: {i..j-},
uimplies: b supposing a,
lelt: i ≤ j < k,
and: P ∧ Q,
le: A ≤ B,
less_than: a < b,
squash: ↓T,
decidable: Dec(P),
or: P ∨ Q,
not: ¬A,
satisfiable_int_formula: satisfiable_int_formula(fmla),
exists: ∃x:A. B[x],
false: False,
top: Top,
prop: ℙ,
subtype_rel: A ⊆r B,
less_than': less_than'(a;b),
mrec: mrec(L;i),
uiff: uiff(P;Q),
outl: outl(x),
isl: isl(x),
assert: ↑b,
ifthenelse: if b then t else f fi ,
btrue: tt,
true: True,
guard: {T},
iff: P ⇐⇒ Q,
rev_implies: P ⇐ Q,
prec: prec(lbl,p.a[lbl; p];i),
so_apply: x[s],
ext-eq: A ≡ B,
cand: A c∧ B,
outr: outr(x),
bnot: ¬bb,
bfalse: ff,
list: T List,
l_all: (∀x∈L.P[x])
Lemmas referenced :
mkinds_wf,
istype-less_than,
length_wf,
mrec-spec_wf,
tuple-type_wf,
map_wf,
prec_wf,
list_wf,
istype-universe,
mobj_wf,
mrec_spec_wf,
int_seg_wf,
select_wf,
int_seg_properties,
decidable__le,
full-omega-unsat,
intformand_wf,
intformnot_wf,
intformle_wf,
itermConstant_wf,
itermVar_wf,
istype-int,
int_formula_prop_and_lemma,
istype-void,
int_formula_prop_not_lemma,
int_formula_prop_le_lemma,
int_term_value_constant_lemma,
int_term_value_var_lemma,
int_formula_prop_wf,
decidable__lt,
intformless_wf,
int_formula_prop_less_lemma,
select-tuple_wf,
int_seg_subtype_nat,
istype-false,
select-map,
subtype_rel_list,
top_wf,
equal_wf,
squash_wf,
true_wf,
inl-one-one,
outl_wf,
assert_wf,
btrue_wf,
bfalse_wf,
mrec_wf,
btrue_neq_bfalse,
not-0-eq-1,
inr-one-one,
subtype_rel_self,
iff_weakening_equal,
mobj-ext,
map-length,
outr_wf,
bnot_wf,
istype-true,
mk-prec_wf,
prec-arg-types_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
Error :isect_memberFormation_alt,
sqequalRule,
Error :functionIsType,
Error :universeIsType,
cut,
introduction,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
hypothesis,
setElimination,
rename,
Error :setIsType,
Error :inhabitedIsType,
natural_numberEquality,
instantiate,
unionEquality,
cumulativity,
atomEquality,
universeEquality,
Error :lambdaFormation_alt,
Error :lambdaEquality_alt,
equalityTransitivity,
equalitySymmetry,
unionElimination,
Error :equalityIstype,
dependent_functionElimination,
independent_functionElimination,
Error :unionIsType,
applyLambdaEquality,
because_Cache,
Error :TYPEIsType,
closedConclusion,
independent_isectElimination,
productElimination,
imageElimination,
approximateComputation,
Error :dependent_pairFormation_alt,
int_eqEquality,
Error :isect_memberEquality_alt,
voidElimination,
independent_pairFormation,
applyEquality,
Error :dependent_set_memberEquality_alt,
Error :productIsType,
promote_hyp,
hyp_replacement,
Error :inlEquality_alt,
imageMemberEquality,
baseClosed,
Error :TYPEMemberIsType,
Error :dependent_pairEquality_alt,
Error :inrEquality_alt
Latex:
\mforall{}[L:MutualRectypeSpec]. \mforall{}[P:mobj(L) {}\mrightarrow{} TYPE]. istype(mrecind(L;x.P[x]))
Date html generated:
2019_06_20-PM-02_16_02
Last ObjectModification:
2019_03_12-PM-11_10_11
Theory : tuples
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