Nuprl Lemma : pres-v_wf
∀[G:j⊢]. ∀[phi:{G ⊢ _:𝔽}]. ∀[T:{G.𝕀 ⊢ _}]. ∀[t:{G.𝕀, (phi)p ⊢ _:T}]. ∀[t0:{G ⊢ _:(T)[0(𝕀)][phi |⟶ t[0]]}].
∀[cT:composition-function{j:l,i:l}(G.𝕀;T)].
(pres-v(G;phi;t;t0;cT) ∈ {G.𝕀 ⊢ _:T[(phi)p |⟶ t]})
Proof
Definitions occuring in Statement :
pres-v: pres-v(G;phi;t;t0;cT),
composition-function: composition-function{j:l,i:l}(Gamma;A),
partial-term-0: u[0],
constrained-cubical-term: {Gamma ⊢ _:A[phi |⟶ t]},
context-subset: Gamma, phi,
face-type: 𝔽,
interval-0: 0(𝕀),
interval-type: 𝕀,
csm-id-adjoin: [u],
cc-fst: p,
cube-context-adjoin: X.A,
csm-ap-term: (t)s,
cubical-term: {X ⊢ _:A},
csm-ap-type: (AF)s,
cubical-type: {X ⊢ _},
cubical_set: CubicalSet,
uall: ∀[x:A]. B[x],
member: t ∈ T
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
pres-v: pres-v(G;phi;t;t0;cT),
subtype_rel: A ⊆r B,
guard: {T}
Lemmas referenced :
fill_term_wf,
composition-function_wf,
cube-context-adjoin_wf,
interval-type_wf,
constrained-cubical-term_wf,
csm-ap-type_wf,
cubical_set_cumulativity-i-j,
csm-id-adjoin_wf-interval-0,
cubical-type-cumulativity2,
partial-term-0_wf,
istype-cubical-term,
context-subset_wf,
csm-ap-term_wf,
face-type_wf,
csm-face-type,
cc-fst_wf_interval,
thin-context-subset,
cubical-type_wf,
cubical_set_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation_alt,
introduction,
cut,
sqequalRule,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
hypothesis,
axiomEquality,
equalityTransitivity,
equalitySymmetry,
universeIsType,
instantiate,
isect_memberEquality_alt,
isectIsTypeImplies,
inhabitedIsType,
applyEquality,
because_Cache,
Error :memTop
Latex:
\mforall{}[G:j\mvdash{}]. \mforall{}[phi:\{G \mvdash{} \_:\mBbbF{}\}]. \mforall{}[T:\{G.\mBbbI{} \mvdash{} \_\}]. \mforall{}[t:\{G.\mBbbI{}, (phi)p \mvdash{} \_:T\}].
\mforall{}[t0:\{G \mvdash{} \_:(T)[0(\mBbbI{})][phi |{}\mrightarrow{} t[0]]\}]. \mforall{}[cT:composition-function\{j:l,i:l\}(G.\mBbbI{};T)].
(pres-v(G;phi;t;t0;cT) \mmember{} \{G.\mBbbI{} \mvdash{} \_:T[(phi)p |{}\mrightarrow{} t]\})
Date html generated:
2020_05_20-PM-05_26_44
Last ObjectModification:
2020_04_18-PM-10_56_59
Theory : cubical!type!theory
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