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Mirrors > Home > MPE Home > Th. List > subcfn | Structured version Visualization version GIF version |
Description: An element in the set of subcategories is a binary function. (Contributed by Mario Carneiro, 4-Jan-2017.) |
Ref | Expression |
---|---|
subcixp.1 | ⊢ (𝜑 → 𝐽 ∈ (Subcat‘𝐶)) |
subcfn.2 | ⊢ (𝜑 → 𝑆 = dom dom 𝐽) |
Ref | Expression |
---|---|
subcfn | ⊢ (𝜑 → 𝐽 Fn (𝑆 × 𝑆)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | subcixp.1 | . . 3 ⊢ (𝜑 → 𝐽 ∈ (Subcat‘𝐶)) | |
2 | eqid 2821 | . . 3 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶) | |
3 | 1, 2 | subcssc 17104 | . 2 ⊢ (𝜑 → 𝐽 ⊆cat (Homf ‘𝐶)) |
4 | subcfn.2 | . 2 ⊢ (𝜑 → 𝑆 = dom dom 𝐽) | |
5 | 3, 4 | sscfn1 17081 | 1 ⊢ (𝜑 → 𝐽 Fn (𝑆 × 𝑆)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2110 × cxp 5548 dom cdm 5550 Fn wfn 6345 ‘cfv 6350 Homf chomf 16931 Subcatcsubc 17073 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-rep 5183 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-fal 1546 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3497 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4833 df-iun 4914 df-br 5060 df-opab 5122 df-mpt 5140 df-id 5455 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 df-res 5562 df-ima 5563 df-iota 6309 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-ov 7153 df-oprab 7154 df-mpo 7155 df-pm 8403 df-ixp 8456 df-ssc 17074 df-subc 17076 |
This theorem is referenced by: subccat 17112 subsubc 17117 funcres 17160 funcres2 17162 idfusubc 44130 |
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