Nuprl Lemma : term-to-pathtype_wf
∀[X:j⊢]. ∀[A:{X ⊢ _}]. ∀a:{X.𝕀 ⊢ _:(A)p}. (<>a ∈ {X ⊢ _:Path(A)})
Proof
Definitions occuring in Statement :
term-to-pathtype: <>a,
pathtype: Path(A),
interval-type: 𝕀,
cc-fst: p,
cube-context-adjoin: X.A,
cubical-term: {X ⊢ _:A},
csm-ap-type: (AF)s,
cubical-type: {X ⊢ _},
cubical_set: CubicalSet,
uall: ∀[x:A]. B[x],
all: ∀x:A. B[x],
member: t ∈ T
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
all: ∀x:A. B[x],
term-to-pathtype: <>a,
subtype_rel: A ⊆r B,
uimplies: b supposing a
Lemmas referenced :
term-to-path_wf,
path-type-subtype,
csm-ap-term_wf,
cubical_set_cumulativity-i-j,
cube-context-adjoin_wf,
interval-type_wf,
csm-ap-type_wf,
cc-fst_wf,
csm-id-adjoin_wf-interval-0,
subset-cubical-term2,
sub_cubical_set_self,
csm_id_adjoin_fst_type_lemma,
csm-ap-id-type,
csm-id-adjoin_wf-interval-1,
cubical-term_wf,
cubical-type-cumulativity2,
cubical-type_wf,
cubical_set_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation_alt,
introduction,
cut,
lambdaFormation_alt,
sqequalRule,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
dependent_functionElimination,
hypothesis,
applyEquality,
instantiate,
because_Cache,
independent_isectElimination,
Error :memTop,
universeIsType,
lambdaEquality_alt,
axiomEquality,
equalityTransitivity,
equalitySymmetry,
functionIsTypeImplies,
inhabitedIsType,
isect_memberEquality_alt,
isectIsTypeImplies
Latex:
\mforall{}[X:j\mvdash{}]. \mforall{}[A:\{X \mvdash{} \_\}]. \mforall{}a:\{X.\mBbbI{} \mvdash{} \_:(A)p\}. (<>a \mmember{} \{X \mvdash{} \_:Path(A)\})
Date html generated:
2020_05_20-PM-03_20_01
Last ObjectModification:
2020_04_06-PM-06_36_49
Theory : cubical!type!theory
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