Step
*
1
of Lemma
cubical-term-subtype-cubical-subset
1. I : fset(ℕ)
2. psi : 𝔽(I)
3. T : {formal-cube(I) ⊢ _}
4. x : I@0:fset(ℕ) ⟶ a:formal-cube(I)(I@0) ⟶ T(a)
5. ∀I@0,J:fset(ℕ). ∀f:J ⟶ I@0. ∀a:formal-cube(I)(I@0). ((x I@0 a a f) = (x J f(a)) ∈ T(f(a)))
⊢ x ∈ I@0:fset(ℕ) ⟶ a:I,psi(I@0) ⟶ T(a)
BY
{ ((RWO "cubical-subset-I_cube" 0 THENA Auto) THEN RepUR ``formal-cube`` 4 THEN Auto) }
Latex:
Latex:
1. I : fset(\mBbbN{})
2. psi : \mBbbF{}(I)
3. T : \{formal-cube(I) \mvdash{} \_\}
4. x : I@0:fset(\mBbbN{}) {}\mrightarrow{} a:formal-cube(I)(I@0) {}\mrightarrow{} T(a)
5. \mforall{}I@0,J:fset(\mBbbN{}). \mforall{}f:J {}\mrightarrow{} I@0. \mforall{}a:formal-cube(I)(I@0). ((x I@0 a a f) = (x J f(a)))
\mvdash{} x \mmember{} I@0:fset(\mBbbN{}) {}\mrightarrow{} a:I,psi(I@0) {}\mrightarrow{} T(a)
By
Latex:
((RWO "cubical-subset-I\_cube" 0 THENA Auto) THEN RepUR ``formal-cube`` 4 THEN Auto)
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