Step
*
of Lemma
unique-poset-functor
∀C:SmallCategory. ∀I:Cname List. ∀L:name-morph(I;[]) ⟶ cat-ob(C). ∀E:i:nameset(I)
⟶ c:{c:name-morph(I;[])| (c i) = 0 ∈ ℕ2}
⟶ (cat-arrow(C) (L c) (L flip(c;i))).
(edge-arrows-commute(C;I;L;E)
⇒ (∃!F:Functor(poset-cat(I);C). poset-functor-extends(C;I;L;E;F)))
BY
{ Auto }
1
1. C : SmallCategory@i'
2. I : Cname List@i
3. L : name-morph(I;[]) ⟶ cat-ob(C)@i
4. E : i:nameset(I) ⟶ c:{c:name-morph(I;[])| (c i) = 0 ∈ ℕ2} ⟶ (cat-arrow(C) (L c) (L flip(c;i)))@i
5. edge-arrows-commute(C;I;L;E)@i
⊢ ∃!F:Functor(poset-cat(I);C). poset-functor-extends(C;I;L;E;F)
Latex:
Latex:
\mforall{}C:SmallCategory. \mforall{}I:Cname List. \mforall{}L:name-morph(I;[]) {}\mrightarrow{} cat-ob(C). \mforall{}E:i:nameset(I)
{}\mrightarrow{} c:\{c:name-morph(I;[])|
(c i) = 0\}
{}\mrightarrow{} (cat-arrow(C) (L c)
(L flip(c;i))).
(edge-arrows-commute(C;I;L;E) {}\mRightarrow{} (\mexists{}!F:Functor(poset-cat(I);C). poset-functor-extends(C;I;L;E;F)))
By
Latex:
Auto
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