Step
*
of Lemma
subset-I_set
No Annotations
∀[C:SmallCategory]. ∀[X,Y:ps_context{j:l}(C)]. ∀I:cat-ob(C). (Y(I) ⊆r X(I)) supposing sub_ps_context{j:l}(C; Y; X)
BY
{ (Auto
THEN Unfold `subtype_rel` 0
THEN Unfold `sub_ps_context` -2
THEN (MemTypeHD (-2) THENA Auto)
THEN Thin (-2)
THEN Fold `member` (-2)) }
1
1. C : SmallCategory
2. X : ps_context{j:l}(C)
3. Y : ps_context{j:l}(C)
4. 1(Y) ∈ A:cat-ob(op-cat(C)) ⟶ (cat-arrow(type-cat{j':l}) (Y A) (X A))
5. I : cat-ob(C)
⊢ λx.x ∈ Y(I) ⟶ X(I)
Latex:
Latex:
No Annotations
\mforall{}[C:SmallCategory]. \mforall{}[X,Y:ps\_context\{j:l\}(C)].
\mforall{}I:cat-ob(C). (Y(I) \msubseteq{}r X(I)) supposing sub\_ps\_context\{j:l\}(C; Y; X)
By
Latex:
(Auto
THEN Unfold `subtype\_rel` 0
THEN Unfold `sub\_ps\_context` -2
THEN (MemTypeHD (-2) THENA Auto)
THEN Thin (-2)
THEN Fold `member` (-2))
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