Step
*
1
of Lemma
unit-pathtype
1. G : CubicalSet{j}
2. a : {G ⊢ _:Path(1)}
3. b : {G ⊢ _:Path(1)}
4. I : fset(ℕ)
5. a1 : G(I)
⊢ (a I a1) = (b I a1) ∈ Path(1)(a1)
BY
{ (DVar `a' THEN DVar `b') }
1
1. G : CubicalSet{j}
2. a : I:fset(ℕ) ⟶ a:G(I) ⟶ Path(1)(a)
3. ∀I,J:fset(ℕ). ∀f:J ⟶ I. ∀a@0:G(I). ((a I a@0 a@0 f) = (a J f(a@0)) ∈ Path(1)(f(a@0)))
4. b : I:fset(ℕ) ⟶ a:G(I) ⟶ Path(1)(a)
5. ∀I,J:fset(ℕ). ∀f:J ⟶ I. ∀a:G(I). ((b I a a f) = (b J f(a)) ∈ Path(1)(f(a)))
6. I : fset(ℕ)
7. a1 : G(I)
⊢ (a I a1) = (b I a1) ∈ Path(1)(a1)
Latex:
Latex:
1. G : CubicalSet\{j\}
2. a : \{G \mvdash{} \_:Path(1)\}
3. b : \{G \mvdash{} \_:Path(1)\}
4. I : fset(\mBbbN{})
5. a1 : G(I)
\mvdash{} (a I a1) = (b I a1)
By
Latex:
(DVar `a' THEN DVar `b')
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