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Mirrors > Home > MPE Home > Th. List > rescfth | Structured version Visualization version GIF version |
Description: The inclusion functor from a subcategory is a faithful functor. (Contributed by Mario Carneiro, 27-Jan-2017.) |
Ref | Expression |
---|---|
rescfth.d | ⊢ 𝐷 = (𝐶 ↾cat 𝐽) |
rescfth.i | ⊢ 𝐼 = (idfunc‘𝐷) |
Ref | Expression |
---|---|
rescfth | ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐼 ∈ (𝐷 Faith 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rescfth.d | . . . 4 ⊢ 𝐷 = (𝐶 ↾cat 𝐽) | |
2 | 1 | oveq2i 7429 | . . 3 ⊢ (𝐷 Faith 𝐷) = (𝐷 Faith (𝐶 ↾cat 𝐽)) |
3 | fthres2 17922 | . . 3 ⊢ (𝐽 ∈ (Subcat‘𝐶) → (𝐷 Faith (𝐶 ↾cat 𝐽)) ⊆ (𝐷 Faith 𝐶)) | |
4 | 2, 3 | eqsstrid 4025 | . 2 ⊢ (𝐽 ∈ (Subcat‘𝐶) → (𝐷 Faith 𝐷) ⊆ (𝐷 Faith 𝐶)) |
5 | id 22 | . . . . 5 ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐽 ∈ (Subcat‘𝐶)) | |
6 | 1, 5 | subccat 17835 | . . . 4 ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐷 ∈ Cat) |
7 | rescfth.i | . . . . 5 ⊢ 𝐼 = (idfunc‘𝐷) | |
8 | 7 | idffth 17923 | . . . 4 ⊢ (𝐷 ∈ Cat → 𝐼 ∈ ((𝐷 Full 𝐷) ∩ (𝐷 Faith 𝐷))) |
9 | 6, 8 | syl 17 | . . 3 ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐼 ∈ ((𝐷 Full 𝐷) ∩ (𝐷 Faith 𝐷))) |
10 | 9 | elin2d 4197 | . 2 ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐼 ∈ (𝐷 Faith 𝐷)) |
11 | 4, 10 | sseldd 3977 | 1 ⊢ (𝐽 ∈ (Subcat‘𝐶) → 𝐼 ∈ (𝐷 Faith 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2098 ∩ cin 3943 ‘cfv 6548 (class class class)co 7418 Catccat 17645 ↾cat cresc 17792 Subcatcsubc 17793 idfunccidfu 17842 Full cful 17892 Faith cfth 17893 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3964 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6306 df-ord 6373 df-on 6374 df-lim 6375 df-suc 6376 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7374 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7871 df-1st 7993 df-2nd 7994 df-frecs 8286 df-wrecs 8317 df-recs 8391 df-rdg 8430 df-er 8724 df-map 8846 df-pm 8847 df-ixp 8916 df-en 8964 df-dom 8965 df-sdom 8966 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-nn 12244 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-9 12313 df-n0 12504 df-z 12590 df-dec 12709 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17182 df-ress 17211 df-hom 17258 df-cco 17259 df-cat 17649 df-cid 17650 df-homf 17651 df-ssc 17794 df-resc 17795 df-subc 17796 df-func 17845 df-idfu 17846 df-full 17894 df-fth 17895 |
This theorem is referenced by: inclfusubc 17931 |
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