Nuprl Lemma : empty-cubical-subset-I_cube
∀[I,J:fset(ℕ)]. (¬I,0(J))
Proof
Definitions occuring in Statement :
cubical-subset: I,psi,
face_lattice: face_lattice(I),
I_cube: A(I),
lattice-0: 0,
fset: fset(T),
nat: ℕ,
uall: ∀[x:A]. B[x],
not: ¬A
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
not: ¬A,
implies: P ⇒ Q,
false: False,
cubical-subset: I,psi,
I_cube: A(I),
cube-cat: CubeCat,
rep-sub-sheaf: rep-sub-sheaf(C;X;P),
functor-ob: ob(F),
pi1: fst(t),
all: ∀x:A. B[x],
top: Top,
name-morph-satisfies: (psi f) = 1,
squash: ↓T,
prop: ℙ,
subtype_rel: A ⊆r B,
bdd-distributive-lattice: BoundedDistributiveLattice,
so_lambda: λ2x.t[x],
and: P ∧ Q,
so_apply: x[s],
uimplies: b supposing a,
true: True,
guard: {T},
iff: P ⇐⇒ Q,
lattice-point: Point(l),
record-select: r.x,
face_lattice: face_lattice(I),
face-lattice: face-lattice(T;eq),
free-dist-lattice-with-constraints: free-dist-lattice-with-constraints(T;eq;x.Cs[x]),
constrained-antichain-lattice: constrained-antichain-lattice(T;eq;P),
mk-bounded-distributive-lattice: mk-bounded-distributive-lattice,
mk-bounded-lattice: mk-bounded-lattice(T;m;j;z;o),
record-update: r[x := v],
ifthenelse: if b then t else f fi ,
eq_atom: x =a y,
bfalse: ff,
btrue: tt,
face-presheaf: 𝔽
Lemmas referenced :
cat_arrow_triple_lemma,
equal_wf,
squash_wf,
true_wf,
lattice-point_wf,
face_lattice_wf,
subtype_rel_set,
bounded-lattice-structure_wf,
lattice-structure_wf,
lattice-axioms_wf,
bounded-lattice-structure-subtype,
bounded-lattice-axioms_wf,
uall_wf,
lattice-meet_wf,
lattice-join_wf,
fl-morph-0,
subtype_rel_self,
iff_weakening_equal,
I_cube_wf,
cubical-subset_wf,
lattice-0_wf,
bdd-distributive-lattice_wf,
face-presheaf_wf,
small_cubical_set_subtype,
fset_wf,
nat_wf,
face-lattice-0-not-1
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation,
introduction,
cut,
lambdaFormation,
thin,
sqequalHypSubstitution,
sqequalRule,
extract_by_obid,
dependent_functionElimination,
isect_memberEquality,
voidElimination,
voidEquality,
hypothesis,
setElimination,
rename,
applyEquality,
lambdaEquality,
imageElimination,
isectElimination,
hypothesisEquality,
equalityTransitivity,
equalitySymmetry,
universeEquality,
instantiate,
productEquality,
cumulativity,
because_Cache,
independent_isectElimination,
natural_numberEquality,
imageMemberEquality,
baseClosed,
productElimination,
independent_functionElimination
Latex:
\mforall{}[I,J:fset(\mBbbN{})]. (\mneg{}I,0(J))
Date html generated:
2018_05_23-AM-09_15_48
Last ObjectModification:
2018_05_20-PM-06_14_51
Theory : cubical!type!theory
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