Step * 3 of Lemma face-forall-implies-1


1. CubicalSet{j}
2. phi {H.𝕀 ⊢ _:𝔽}
3. Top
4. fset(ℕ)
5. rho H(I)
6. (∀ phi)(rho) 1 ∈ Point(face_lattice(I))
7. (new-name(I)1) ∈ I ⟶ I+new-name(I)
8. <new-name(I)> ∈ 𝕀(s(rho))
9. (phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> phi(<rho, 1>) ∈ Point(face_lattice(I))
⊢ (phi)[1(𝕀)](rho) 1 ∈ Point(face_lattice(I))
BY
Assert ⌜(phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> 1 ∈ Point(face_lattice(I))⌝⋅ }

1
.....assertion..... 
1. CubicalSet{j}
2. phi {H.𝕀 ⊢ _:𝔽}
3. Top
4. fset(ℕ)
5. rho H(I)
6. (∀ phi)(rho) 1 ∈ Point(face_lattice(I))
7. (new-name(I)1) ∈ I ⟶ I+new-name(I)
8. <new-name(I)> ∈ 𝕀(s(rho))
9. (phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> phi(<rho, 1>) ∈ Point(face_lattice(I))
⊢ (phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> 1 ∈ Point(face_lattice(I))

2
1. CubicalSet{j}
2. phi {H.𝕀 ⊢ _:𝔽}
3. Top
4. fset(ℕ)
5. rho H(I)
6. (∀ phi)(rho) 1 ∈ Point(face_lattice(I))
7. (new-name(I)1) ∈ I ⟶ I+new-name(I)
8. <new-name(I)> ∈ 𝕀(s(rho))
9. (phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> phi(<rho, 1>) ∈ Point(face_lattice(I))
10. (phi(<s(rho), <new-name(I)>>))<(new-name(I)1)> 1 ∈ Point(face_lattice(I))
⊢ (phi)[1(𝕀)](rho) 1 ∈ Point(face_lattice(I))


Latex:


Latex:

1.  H  :  CubicalSet\{j\}
2.  phi  :  \{H.\mBbbI{}  \mvdash{}  \_:\mBbbF{}\}
3.  X  :  Top
4.  I  :  fset(\mBbbN{})
5.  rho  :  H(I)
6.  (\mforall{}  phi)(rho)  =  1
7.  (new-name(I)1)  \mmember{}  I  {}\mrightarrow{}  I+new-name(I)
8.  <new-name(I)>  \mmember{}  \mBbbI{}(s(rho))
9.  (phi(<s(rho),  <new-name(I)>>))<(new-name(I)1)>  =  phi(<rho,  1>)
\mvdash{}  (phi)[1(\mBbbI{})](rho)  =  1


By


Latex:
Assert  \mkleeneopen{}(phi(<s(rho),  <new-name(I)>>))<(new-name(I)1)>  =  1\mkleeneclose{}\mcdot{}




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