Nuprl Lemma : Kan-interval_wf
Kan-interval() ∈ KanCubicalSet
Proof
Definitions occuring in Statement : 
Kan-interval: Kan-interval()
, 
Kan-cubical-set: KanCubicalSet
, 
member: t ∈ T
Definitions unfolded in proof : 
member: t ∈ T
, 
Kan-cubical-set: KanCubicalSet
, 
Kan-interval: Kan-interval()
, 
uall: ∀[x:A]. B[x]
, 
subtype_rel: A ⊆r B
, 
uimplies: b supposing a
, 
nameset: nameset(L)
, 
and: P ∧ Q
, 
cand: A c∧ B
, 
uniform-Kan-filler: uniform-Kan-filler(X;filler)
, 
all: ∀x:A. B[x]
, 
implies: P 
⇒ Q
, 
name-morph: name-morph(I;J)
, 
prop: ℙ
, 
l_member: (x ∈ l)
, 
exists: ∃x:A. B[x]
, 
coordinate_name: Cname
, 
int_upper: {i...}
, 
so_lambda: λ2x.t[x]
, 
so_apply: x[s]
, 
sq_type: SQType(T)
, 
guard: {T}
, 
nat: ℕ
, 
squash: ↓T
, 
sq_stable: SqStable(P)
, 
int_seg: {i..j-}
, 
lelt: i ≤ j < k
, 
ge: i ≥ j 
, 
decidable: Dec(P)
, 
or: P ∨ Q
, 
not: ¬A
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
false: False
, 
top: Top
, 
uiff: uiff(P;Q)
, 
rev_uimplies: rev_uimplies(P;Q)
, 
iff: P 
⇐⇒ Q
, 
l_all: (∀x∈L.P[x])
, 
open_box: open_box(X;I;J;x;i)
, 
less_than: a < b
, 
I-face: I-face(X;I)
, 
pi1: fst(t)
, 
cubical-interval: cubical-interval()
, 
cubical-interval-filler: cubical-interval-filler()
, 
I-cube: X(I)
, 
bool: 𝔹
, 
unit: Unit
, 
it: ⋅
, 
btrue: tt
, 
ifthenelse: if b then t else f fi 
, 
bfalse: ff
, 
bnot: ¬bb
, 
assert: ↑b
, 
rev_implies: P 
⇐ Q
, 
cons: [a / b]
, 
l_exists: (∃x∈L. P[x])
, 
open_box_image: open_box_image(X;I;K;f;bx)
, 
cube-set-restriction: f(s)
, 
pi2: snd(t)
, 
face-image: face-image(X;I;K;f;face)
, 
spreadn: spread3, 
face-cube: cube(f)
, 
le: A ≤ B
, 
subtract: n - m
, 
less_than': less_than'(a;b)
, 
true: True
, 
listp: A List+
, 
name-comp: (f o g)
, 
compose: f o g
, 
uext: uext(g)
, 
face-name: face-name(f)
, 
cubical-interval-ap: u(L)
Lemmas referenced : 
cubical-interval_wf, 
cubical-interval-filler_wf, 
list_wf, 
coordinate_name_wf, 
nameset_wf, 
int_seg_wf, 
open_box_wf, 
subtype_rel_list, 
I-cube_wf, 
cubical-interval-filler-fills, 
istype-assert, 
isname_wf, 
l_member_wf, 
name-morph_wf, 
Kan-filler_wf, 
uniform-Kan-filler_wf, 
subtype_base_sq, 
set_subtype_base, 
le_wf, 
istype-int, 
int_subtype_base, 
select_wf, 
sq_stable__le, 
nat_properties, 
int_seg_properties, 
sq_stable__l_member, 
decidable__equal-coordinate_name, 
decidable__le, 
full-omega-unsat, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_wf, 
itermVar_wf, 
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, 
void_wf, 
assert-isname, 
list-subtype, 
map_wf, 
cons_wf, 
name-morph-domain_wf, 
assert_wf, 
subtype_rel_functionality_wrt_iff, 
ext-eq_weakening, 
name-morph-domain_subtype, 
cons_member, 
length_wf, 
I-face_wf, 
sq_stable__assert, 
decidable__lt, 
intformless_wf, 
int_formula_prop_less_lemma, 
ob_pair_lemma, 
null-map, 
null_wf3, 
top_wf, 
eqtt_to_assert, 
assert_of_null, 
eqff_to_assert, 
bool_subtype_base, 
bool_cases_sqequal, 
bool_wf, 
assert-bnot, 
iff_weakening_uiff, 
equal-wf-T-base, 
list-cases, 
product_subtype_list, 
length_of_nil_lemma, 
reduce_hd_cons_lemma, 
map_cons_lemma, 
name-comp_wf, 
list-diff_wf, 
cname_deq_wf, 
nil_wf, 
name-morph_subtype, 
nameset_subtype, 
list-diff-subset, 
map_nil_lemma, 
extd-nameset_wf, 
extd-nameset_subtype_base, 
hd_wf, 
listp_properties, 
length_of_cons_lemma, 
length_wf_nat, 
istype-false, 
not-lt-2, 
condition-implies-le, 
minus-add, 
minus-one-mul, 
zero-add, 
minus-one-mul-top, 
add-commutes, 
add_functionality_wrt_le, 
add-associates, 
add-zero, 
le-add-cancel, 
istype-less_than, 
hd_member, 
not-ge-2, 
add-swap, 
le-add-cancel2, 
extd-nameset-nil, 
get_face_image, 
isname-nameset, 
lelt_wf, 
get_face_wf, 
equal_wf, 
cube-set-restriction_wf, 
face-cube_wf, 
face-dimension_wf, 
cubical-interval-ap_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
dependent_set_memberEquality_alt, 
dependent_pairEquality_alt, 
cut, 
introduction, 
extract_by_obid, 
hypothesis, 
functionIsType, 
universeIsType, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesisEquality, 
natural_numberEquality, 
applyEquality, 
independent_isectElimination, 
lambdaEquality_alt, 
setElimination, 
rename, 
inhabitedIsType, 
sqequalRule, 
independent_pairFormation, 
lambdaFormation_alt, 
because_Cache, 
productElimination, 
productIsType, 
instantiate, 
cumulativity, 
intEquality, 
closedConclusion, 
dependent_functionElimination, 
equalityTransitivity, 
equalitySymmetry, 
independent_functionElimination, 
applyLambdaEquality, 
imageMemberEquality, 
baseClosed, 
imageElimination, 
unionElimination, 
approximateComputation, 
dependent_pairFormation_alt, 
int_eqEquality, 
isect_memberEquality_alt, 
voidElimination, 
functionExtensionality, 
functionExtensionality_alt, 
equalityIsType1, 
setEquality, 
equalityElimination, 
equalityIsType3, 
promote_hyp, 
hypothesis_subsumption, 
addEquality, 
minusEquality, 
hyp_replacement
Latex:
Kan-interval()  \mmember{}  KanCubicalSet
Date html generated:
2019_11_05-PM-00_31_40
Last ObjectModification:
2018_11_08-PM-01_16_07
Theory : cubical!sets
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