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Definition df-resc 16518
Description: Define the restriction of a category to a given set of arrows. (Contributed by Mario Carneiro, 4-Jan-2017.)
Assertion
Ref Expression
df-resc cat = (𝑐 ∈ V, ∈ V ↦ ((𝑐s dom dom ) sSet ⟨(Hom ‘ndx), ⟩))
Distinct variable group:   ,𝑐

Detailed syntax breakdown of Definition df-resc
StepHypRef Expression
1 cresc 16515 . 2 class cat
2 vc . . 3 setvar 𝑐
3 vh . . 3 setvar
4 cvv 3231 . . 3 class V
52cv 1522 . . . . 5 class 𝑐
63cv 1522 . . . . . . 7 class
76cdm 5143 . . . . . 6 class dom
87cdm 5143 . . . . 5 class dom dom
9 cress 15905 . . . . 5 class s
105, 8, 9co 6690 . . . 4 class (𝑐s dom dom )
11 cnx 15901 . . . . . 6 class ndx
12 chom 15999 . . . . . 6 class Hom
1311, 12cfv 5926 . . . . 5 class (Hom ‘ndx)
1413, 6cop 4216 . . . 4 class ⟨(Hom ‘ndx),
15 csts 15902 . . . 4 class sSet
1610, 14, 15co 6690 . . 3 class ((𝑐s dom dom ) sSet ⟨(Hom ‘ndx), ⟩)
172, 3, 4, 4, 16cmpt2 6692 . 2 class (𝑐 ∈ V, ∈ V ↦ ((𝑐s dom dom ) sSet ⟨(Hom ‘ndx), ⟩))
181, 17wceq 1523 1 wff cat = (𝑐 ∈ V, ∈ V ↦ ((𝑐s dom dom ) sSet ⟨(Hom ‘ndx), ⟩))
Colors of variables: wff setvar class
This definition is referenced by:  rescval  16534
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