Nuprl Lemma : sq_stable_Kan-A-filler
∀[X:CubicalSet]. ∀[A:{X ⊢ _}]. ∀[filler:I:(Cname List)
⟶ alpha:X(I)
⟶ J:(nameset(I) List)
⟶ x:nameset(I)
⟶ i:ℕ2
⟶ A-open-box(X;A;I;alpha;J;x;i)
⟶ A(alpha)].
SqStable(Kan-A-filler(X;A;filler))
Proof
Definitions occuring in Statement :
Kan-A-filler: Kan-A-filler(X;A;filler)
,
A-open-box: A-open-box(X;A;I;alpha;J;x;i)
,
cubical-type-at: A(a)
,
cubical-type: {X ⊢ _}
,
I-cube: X(I)
,
cubical-set: CubicalSet
,
nameset: nameset(L)
,
coordinate_name: Cname
,
list: T List
,
int_seg: {i..j-}
,
sq_stable: SqStable(P)
,
uall: ∀[x:A]. B[x]
,
function: x:A ⟶ B[x]
,
natural_number: $n
Definitions unfolded in proof :
uall: ∀[x:A]. B[x]
,
Kan-A-filler: Kan-A-filler(X;A;filler)
,
member: t ∈ T
,
all: ∀x:A. B[x]
,
subtype_rel: A ⊆r B
,
uimplies: b supposing a
,
nameset: nameset(L)
,
A-open-box: A-open-box(X;A;I;alpha;J;x;i)
,
and: P ∧ Q
,
implies: P
⇒ Q
,
sq_stable: SqStable(P)
,
squash: ↓T
,
fills-A-open-box: fills-A-open-box(X;A;I;alpha;bx;cube)
,
fills-A-faces: fills-A-faces(X;A;I;alpha;bx;L)
,
so_lambda: λ2x.t[x]
,
prop: ℙ
,
so_apply: x[s]
,
is-A-face: is-A-face(X;A;I;alpha;bx;f)
,
spreadn: spread3,
A-face: A-face(X;A;I;alpha)
Lemmas referenced :
list_wf,
coordinate_name_wf,
I-cube_wf,
nameset_wf,
int_seg_wf,
A-open-box_wf,
subtype_rel_list,
cubical-type-at_wf,
cubical-type_wf,
cubical-set_wf,
sq_stable__l_subset,
decidable__equal-coordinate_name,
sq_stable__l_all,
A-face_wf,
l_member_wf,
is-A-face_wf,
sq_stable__all,
all_wf,
fills-A-open-box_wf,
squash_wf,
equal_wf,
list-diff_wf,
cname_deq_wf,
cons_wf,
nil_wf,
cube-set-restriction_wf,
face-map_wf2,
cubical-type-ap-morph_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation_alt,
functionIsType,
universeIsType,
cut,
introduction,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesis,
hypothesisEquality,
natural_numberEquality,
dependent_functionElimination,
applyEquality,
independent_isectElimination,
lambdaEquality_alt,
setElimination,
rename,
inhabitedIsType,
sqequalRule,
productElimination,
because_Cache,
independent_functionElimination,
lambdaFormation_alt,
imageMemberEquality,
baseClosed,
imageElimination,
setIsType,
closedConclusion,
axiomEquality
Latex:
\mforall{}[X:CubicalSet]. \mforall{}[A:\{X \mvdash{} \_\}]. \mforall{}[filler:I:(Cname List)
{}\mrightarrow{} alpha:X(I)
{}\mrightarrow{} J:(nameset(I) List)
{}\mrightarrow{} x:nameset(I)
{}\mrightarrow{} i:\mBbbN{}2
{}\mrightarrow{} A-open-box(X;A;I;alpha;J;x;i)
{}\mrightarrow{} A(alpha)].
SqStable(Kan-A-filler(X;A;filler))
Date html generated:
2019_11_05-PM-00_29_26
Last ObjectModification:
2018_11_14-AM-10_17_25
Theory : cubical!sets
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