Nuprl Lemma : ext-eq-cs_wf

∀[X,Y:j⊢].  (X ≡ Y ∈ ℙ{[i | j']})


Proof




Definitions occuring in Statement :  ext-eq-cs: X ≡ Y,  cubical_set: CubicalSet,  uall: ∀[x:A]. B[x],  prop: ℙ,  member: t ∈ T
Definitions unfolded in proof :  uall: ∀[x:A]. B[x],  member: t ∈ T,  cubical_set: CubicalSet,  ext-eq-cs: X ≡ Y
Lemmas referenced :  ext-eq-psc_wf,  cube-cat_wf
Rules used in proof :  cut,  introduction,  extract_by_obid,  sqequalHypSubstitution,  sqequalSubstitution,  sqequalTransitivity,  computationStep,  sqequalReflexivity,  isectElimination,  thin,  hypothesis,  sqequalRule

Latex:
\mforall{}[X,Y:j\mvdash{}].    (X  \mequiv{}  Y  \mmember{}  \mBbbP{}\{[i  |  j']\})



Date html generated: 2020_05_20-PM-01_38_50
Last ObjectModification: 2020_04_03-PM-03_42_47

Theory : cubical!type!theory


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