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| Mirrors > Home > MPE Home > Th. List > fthres2b | Structured version Visualization version GIF version | ||
| Description: Condition for a faithful functor to also be a faithful functor into the restriction. (Contributed by Mario Carneiro, 27-Jan-2017.) |
| Ref | Expression |
|---|---|
| fthres2b.a | ⊢ 𝐴 = (Base‘𝐶) |
| fthres2b.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| fthres2b.r | ⊢ (𝜑 → 𝑅 ∈ (Subcat‘𝐷)) |
| fthres2b.s | ⊢ (𝜑 → 𝑅 Fn (𝑆 × 𝑆)) |
| fthres2b.1 | ⊢ (𝜑 → 𝐹:𝐴⟶𝑆) |
| fthres2b.2 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴)) → (𝑥𝐺𝑦):𝑌⟶((𝐹‘𝑥)𝑅(𝐹‘𝑦))) |
| Ref | Expression |
|---|---|
| fthres2b | ⊢ (𝜑 → (𝐹(𝐶 Faith 𝐷)𝐺 ↔ 𝐹(𝐶 Faith (𝐷 ↾cat 𝑅))𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fthres2b.a | . . . 4 ⊢ 𝐴 = (Base‘𝐶) | |
| 2 | fthres2b.h | . . . 4 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 3 | fthres2b.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ (Subcat‘𝐷)) | |
| 4 | fthres2b.s | . . . 4 ⊢ (𝜑 → 𝑅 Fn (𝑆 × 𝑆)) | |
| 5 | fthres2b.1 | . . . 4 ⊢ (𝜑 → 𝐹:𝐴⟶𝑆) | |
| 6 | fthres2b.2 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴)) → (𝑥𝐺𝑦):𝑌⟶((𝐹‘𝑥)𝑅(𝐹‘𝑦))) | |
| 7 | 1, 2, 3, 4, 5, 6 | funcres2b 18077 | . . 3 ⊢ (𝜑 → (𝐹(𝐶 Func 𝐷)𝐺 ↔ 𝐹(𝐶 Func (𝐷 ↾cat 𝑅))𝐺)) |
| 8 | 7 | anbi1d 643 | . 2 ⊢ (𝜑 → ((𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 Fun ◡(𝑥𝐺𝑦)) ↔ (𝐹(𝐶 Func (𝐷 ↾cat 𝑅))𝐺 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 Fun ◡(𝑥𝐺𝑦)))) |
| 9 | 1 | isfth 18096 | . 2 ⊢ (𝐹(𝐶 Faith 𝐷)𝐺 ↔ (𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 Fun ◡(𝑥𝐺𝑦))) |
| 10 | 1 | isfth 18096 | . 2 ⊢ (𝐹(𝐶 Faith (𝐷 ↾cat 𝑅))𝐺 ↔ (𝐹(𝐶 Func (𝐷 ↾cat 𝑅))𝐺 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 Fun ◡(𝑥𝐺𝑦))) |
| 11 | 8, 9, 10 | 3bitr4g 317 | 1 ⊢ (𝜑 → (𝐹(𝐶 Faith 𝐷)𝐺 ↔ 𝐹(𝐶 Faith (𝐷 ↾cat 𝑅))𝐺)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∀wral 3076 class class class wbr 5102 × cxp 5648 ◡ccnv 5649 Fun wfun 6532 Fn wfn 6533 ⟶wf 6534 ‘cfv 6538 (class class class)co 7420 Basecbs 17392 Hom chom 17444 ↾cat cresc 17988 Subcatcsubc 17989 Func cfunc 18034 Faith cfth 18085 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 ax-pre-mulgt0 11280 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-er 8720 df-map 8852 df-pm 8853 df-ixp 8929 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 df-nn 12339 df-2 12408 df-3 12409 df-4 12410 df-5 12411 df-6 12412 df-7 12413 df-8 12414 df-9 12415 df-n0 12610 df-z 12697 df-dec 12818 df-sets 17347 df-slot 17365 df-ndx 17377 df-base 17393 df-ress 17414 df-hom 17457 df-cco 17458 df-cat 17847 df-cid 17848 df-homf 17849 df-ssc 17990 df-resc 17991 df-subc 17992 df-func 18038 df-fth 18087 |
| This theorem is used by: (None) |
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