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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 6820 | . . . . 5 ⊢ (𝐹:𝑅–1-1-onto→𝑆 → 𝐹:𝑅⟶𝑆) | |
| 3 | 1, 2 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐹:𝑅⟶𝑆) |
| 4 | thinccisod.r | . . . . 5 ⊢ 𝑅 = (Base‘𝑋) | |
| 5 | fvexd 6896 | . . . . 5 ⊢ (𝜑 → (Base‘𝑋) ∈ V) | |
| 6 | 4, 5 | eqeltrid 2867 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 7 | 3, 6 | fexd 7225 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
| 8 | thinccisod.1 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑅)) → ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) | |
| 9 | 8 | ralrimivva 3208 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 10 | 9, 1 | jca 520 | . . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅–1-1-onto→𝑆)) |
| 11 | fveq1 6880 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑥) = (𝐹‘𝑥)) | |
| 12 | fveq1 6880 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑦) = (𝐹‘𝑦)) | |
| 13 | 11, 12 | oveq12d 7428 | . . . . . . 7 ⊢ (𝑓 = 𝐹 → ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦))) |
| 14 | 13 | eqeq1d 2765 | . . . . . 6 ⊢ (𝑓 = 𝐹 → (((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 15 | 14 | bibi2d 345 | . . . . 5 ⊢ (𝑓 = 𝐹 → (((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ↔ ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅))) |
| 16 | 15 | 2ralbidv 3229 | . . . 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 6808 | . . . 4 ⊢ (𝑓 = 𝐹 → (𝑓:𝑅–1-1-onto→𝑆 ↔ 𝐹:𝑅–1-1-onto→𝑆)) | |
| 18 | 16, 17 | anbi12d 643 | . . 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 3557 | . 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 2763 | . . 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 50229 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Cat) |
| 29 | 26, 28 | elind 4153 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Cat)) |
| 30 | 20, 21, 25 | catcbas 18162 | . . . 4 ⊢ (𝜑 → (Base‘𝐶) = (𝑈 ∩ Cat)) |
| 31 | 29, 30 | eleqtrrd 2866 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) |
| 32 | thinccisod.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝑈) | |
| 33 | thinccisod.yt | . . . . . 6 ⊢ (𝜑 → 𝑌 ∈ ThinCat) | |
| 34 | 33 | thinccd 50229 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ Cat) |
| 35 | 32, 34 | elind 4153 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ (𝑈 ∩ Cat)) |
| 36 | 35, 30 | eleqtrrd 2866 | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐶)) |
| 37 | 20, 21, 4, 22, 23, 24, 25, 31, 36, 27, 33 | thincciso 50259 | . 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 260 | 1 ⊢ (𝜑 → 𝑋( ≃𝑐 ‘𝐶)𝑌) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1570 ∃wex 1809 ∈ wcel 2143 ∀wral 3079 Vcvv 3455 ∩ cin 3904 ∅c0 4286 class class class wbr 5109 ⟶wf 6532 –1-1-onto→wf1o 6535 ‘cfv 6536 (class class class)co 7410 Basecbs 17273 Hom chom 17325 Catccat 17724 ≃𝑐 ccic 17856 CatCatccatc 18159 ThinCatcthinc 50223 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11160 ax-resscn 11161 ax-1cn 11162 ax-icn 11163 ax-addcl 11164 ax-addrcl 11165 ax-mulcl 11166 ax-mulrcl 11167 ax-mulcom 11168 ax-addass 11169 ax-mulass 11170 ax-distr 11171 ax-i2m1 11172 ax-1ne0 11173 ax-1rid 11174 ax-rnegex 11175 ax-rrecex 11176 ax-cnre 11177 ax-pre-lttri 11178 ax-pre-lttrn 11179 ax-pre-ltadd 11180 ax-pre-mulgt0 11181 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-tp 4594 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-1st 7982 df-2nd 7983 df-supp 8153 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-er 8690 df-map 8822 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11447 df-neg 11448 df-nn 12238 df-2 12307 df-3 12308 df-4 12309 df-5 12310 df-6 12311 df-7 12312 df-8 12313 df-9 12314 df-n0 12509 df-z 12596 df-dec 12716 df-uz 12867 df-fz 13540 df-struct 17211 df-slot 17246 df-ndx 17258 df-base 17274 df-hom 17338 df-cco 17339 df-cat 17728 df-cid 17729 df-sect 17808 df-inv 17809 df-iso 17810 df-cic 17857 df-func 17919 df-idfu 17920 df-cofu 17921 df-full 17967 df-fth 17968 df-catc 18160 df-thinc 50224 |
| This theorem is used by: oduoppcciso 50372 |
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