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| Mirrors > Home > MPE Home > Th. List > Mathboxes > thinccisod | Structured version Visualization version GIF version | ||
| Description: Two thin categories are isomorphic if the induced preorders are order-isomorphic (deduction form). Example 3.26(2) of [Adamek] p. 33. (Contributed by Zhi Wang, 22-Sep-2025.) |
| Ref | Expression |
|---|---|
| thinccisod.c | ⊢ 𝐶 = (CatCat‘𝑈) |
| thinccisod.r | ⊢ 𝑅 = (Base‘𝑋) |
| thinccisod.s | ⊢ 𝑆 = (Base‘𝑌) |
| thinccisod.h | ⊢ 𝐻 = (Hom ‘𝑋) |
| thinccisod.j | ⊢ 𝐽 = (Hom ‘𝑌) |
| thinccisod.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| thinccisod.x | ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| thinccisod.y | ⊢ (𝜑 → 𝑌 ∈ 𝑈) |
| thinccisod.xt | ⊢ (𝜑 → 𝑋 ∈ ThinCat) |
| thinccisod.yt | ⊢ (𝜑 → 𝑌 ∈ ThinCat) |
| thinccisod.f | ⊢ (𝜑 → 𝐹:𝑅–1-1-onto→𝑆) |
| thinccisod.1 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑅)) → ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| Ref | Expression |
|---|---|
| thinccisod | ⊢ (𝜑 → 𝑋( ≃𝑐 ‘𝐶)𝑌) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | thinccisod.f | . . . . 5 ⊢ (𝜑 → 𝐹:𝑅–1-1-onto→𝑆) | |
| 2 | f1of 6808 | . . . . 5 ⊢ (𝐹:𝑅–1-1-onto→𝑆 → 𝐹:𝑅⟶𝑆) | |
| 3 | 1, 2 | syl 17 | . . . 4 ⊢ (𝜑 → 𝐹:𝑅⟶𝑆) |
| 4 | thinccisod.r | . . . . 5 ⊢ 𝑅 = (Base‘𝑋) | |
| 5 | fvexd 6884 | . . . . 5 ⊢ (𝜑 → (Base‘𝑋) ∈ V) | |
| 6 | 4, 5 | eqeltrid 2868 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 7 | 3, 6 | fexd 7213 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
| 8 | thinccisod.1 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑅)) → ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) | |
| 9 | 8 | ralrimivva 3207 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 10 | 9, 1 | jca 519 | . . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅–1-1-onto→𝑆)) |
| 11 | fveq1 6868 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑥) = (𝐹‘𝑥)) | |
| 12 | fveq1 6868 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑦) = (𝐹‘𝑦)) | |
| 13 | 11, 12 | oveq12d 7416 | . . . . . . 7 ⊢ (𝑓 = 𝐹 → ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦))) |
| 14 | 13 | eqeq1d 2766 | . . . . . 6 ⊢ (𝑓 = 𝐹 → (((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 15 | 14 | bibi2d 344 | . . . . 5 ⊢ (𝑓 = 𝐹 → (((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ↔ ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅))) |
| 16 | 15 | 2ralbidv 3228 | . . . 4 ⊢ (𝑓 = 𝐹 → (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ↔ ∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅))) |
| 17 | f1oeq1 6796 | . . . 4 ⊢ (𝑓 = 𝐹 → (𝑓:𝑅–1-1-onto→𝑆 ↔ 𝐹:𝑅–1-1-onto→𝑆)) | |
| 18 | 16, 17 | anbi12d 641 | . . 3 ⊢ (𝑓 = 𝐹 → ((∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅–1-1-onto→𝑆) ↔ (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅–1-1-onto→𝑆))) |
| 19 | 7, 10, 18 | spcedv 3559 | . 2 ⊢ (𝜑 → ∃𝑓(∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅–1-1-onto→𝑆)) |
| 20 | thinccisod.c | . . 3 ⊢ 𝐶 = (CatCat‘𝑈) | |
| 21 | eqid 2764 | . . 3 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 22 | thinccisod.s | . . 3 ⊢ 𝑆 = (Base‘𝑌) | |
| 23 | thinccisod.h | . . 3 ⊢ 𝐻 = (Hom ‘𝑋) | |
| 24 | thinccisod.j | . . 3 ⊢ 𝐽 = (Hom ‘𝑌) | |
| 25 | thinccisod.u | . . 3 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 26 | thinccisod.x | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝑈) | |
| 27 | thinccisod.xt | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ ThinCat) | |
| 28 | 27 | thinccd 50049 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Cat) |
| 29 | 26, 28 | elind 4154 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Cat)) |
| 30 | 20, 21, 25 | catcbas 18136 | . . . 4 ⊢ (𝜑 → (Base‘𝐶) = (𝑈 ∩ Cat)) |
| 31 | 29, 30 | eleqtrrd 2867 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) |
| 32 | thinccisod.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝑈) | |
| 33 | thinccisod.yt | . . . . . 6 ⊢ (𝜑 → 𝑌 ∈ ThinCat) | |
| 34 | 33 | thinccd 50049 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ Cat) |
| 35 | 32, 34 | elind 4154 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ (𝑈 ∩ Cat)) |
| 36 | 35, 30 | eleqtrrd 2867 | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐶)) |
| 37 | 20, 21, 4, 22, 23, 24, 25, 31, 36, 27, 33 | thincciso 50079 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑓(∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅–1-1-onto→𝑆))) |
| 38 | 19, 37 | mpbird 259 | 1 ⊢ (𝜑 → 𝑋( ≃𝑐 ‘𝐶)𝑌) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1562 ∃wex 1801 ∈ wcel 2144 ∀wral 3078 Vcvv 3456 ∩ cin 3905 ∅c0 4287 class class class wbr 5102 ⟶wf 6519 –1-1-onto→wf1o 6522 ‘cfv 6523 (class class class)co 7398 Basecbs 17247 Hom chom 17299 Catccat 17698 ≃𝑐 ccic 17830 CatCatccatc 18133 ThinCatcthinc 50043 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-rep 5229 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5544 df-eprel 5549 df-po 5557 df-so 5558 df-fr 5602 df-we 5604 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-pred 6290 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-riota 7355 df-ov 7401 df-oprab 7402 df-mpo 7403 df-om 7849 df-1st 7972 df-2nd 7973 df-supp 8143 df-frecs 8264 df-wrecs 8295 df-recs 8344 df-rdg 8383 df-1o 8439 df-er 8680 df-map 8812 df-ixp 8882 df-en 8930 df-dom 8931 df-sdom 8932 df-fin 8933 df-pnf 11220 df-mnf 11221 df-xr 11222 df-ltxr 11223 df-le 11224 df-sub 11418 df-neg 11419 df-nn 12213 df-2 12282 df-3 12283 df-4 12284 df-5 12285 df-6 12286 df-7 12287 df-8 12288 df-9 12289 df-n0 12484 df-z 12571 df-dec 12691 df-uz 12842 df-fz 13515 df-struct 17185 df-slot 17220 df-ndx 17232 df-base 17248 df-hom 17312 df-cco 17313 df-cat 17702 df-cid 17703 df-sect 17782 df-inv 17783 df-iso 17784 df-cic 17831 df-func 17893 df-idfu 17894 df-cofu 17895 df-full 17941 df-fth 17942 df-catc 18134 df-thinc 50044 |
| This theorem is referenced by: oduoppcciso 50192 |
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