Nuprl Lemma : cubes-id
∀[X:Top]. (cat-id(cubes(X)) ~ λ_.1)
Proof
Definitions occuring in Statement : 
cubes: cubes(X)
, 
nh-id: 1
, 
cat-id: cat-id(C)
, 
uall: ∀[x:A]. B[x]
, 
top: Top
, 
lambda: λx.A[x]
, 
sqequal: s ~ t
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
cubes: cubes(X)
, 
cube-cat: CubeCat
, 
all: ∀x:A. B[x]
, 
top: Top
Lemmas referenced : 
sets-id, 
cube-cat_wf, 
cat_id_tuple_lemma
Rules used in proof : 
cut, 
introduction, 
extract_by_obid, 
sqequalHypSubstitution, 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isectElimination, 
thin, 
hypothesis, 
sqequalRule, 
dependent_functionElimination, 
isect_memberEquality, 
voidElimination, 
voidEquality
Latex:
\mforall{}[X:Top].  (cat-id(cubes(X))  \msim{}  \mlambda{}$_{}$.1)
Date html generated:
2018_05_23-AM-08_33_18
Last ObjectModification:
2018_05_20-PM-05_46_24
Theory : cubical!type!theory
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