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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⟶1-1onto𝑆) |
| 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⟶1-1onto𝑆) | |
| 2 | f1of 6843 | . . . . 5 ⊢ (𝐹:𝑅⟶1-1onto𝑆 → 𝐹:𝑅⟶𝑆) | |
| 3 | 1, 2 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐹:𝑅⟶𝑆) |
| 4 | thinccisod.r | . . . . 5 ⊢ 𝑅 = (Base‘𝑋) | |
| 5 | fvexd 6920 | . . . . 5 ⊢ (𝜑 → (Base‘𝑋) ∈ V) | |
| 6 | 4, 5 | eqeltrid 2868 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 7 | 3, 6 | fexd 7253 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
| 8 | thinccisod.1 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑅)) → ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) | |
| 9 | 8 | ralrimivva 3209 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 10 | 9, 1 | jca 521 | . . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅⟶1-1onto𝑆)) |
| 11 | fveq1 6904 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑥) = (𝐹‘𝑥)) | |
| 12 | fveq1 6904 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑦) = (𝐹‘𝑦)) | |
| 13 | 11, 12 | oveq12d 7458 | . . . . . . 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 3230 | . . . 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 6831 | . . . 4 ⊢ (𝑓 = 𝐹 → (𝑓:𝑅⟶1-1onto𝑆 ↔ 𝐹:𝑅⟶1-1onto𝑆)) | |
| 18 | 16, 17 | anbi12d 644 | . . 3 ⊢ (𝑓 = 𝐹 → ((∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅⟶1-1onto𝑆) ↔ (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅⟶1-1onto𝑆))) |
| 19 | 7, 10, 18 | spcedv 3556 | . 2 ⊢ (𝜑 → ∃𝑓(∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅⟶1-1onto𝑆)) |
| 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 | thinccatd 50761 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Cat) |
| 29 | 26, 28 | elind 4100 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Cat)) |
| 30 | 20, 21, 25 | catcbas 18302 | . . . 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 | thinccatd 50761 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ Cat) |
| 35 | 32, 34 | elind 4100 | . . . 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 50791 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑓(∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ∧ 𝑓:𝑅⟶1-1onto𝑆))) |
| 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 401 = wceq 1570 ∃wex 1812 ∈ wcel 2147 ∀wral 3080 Vcvv 3454 ∩ cin 4092 ∅c0 4281 class class class wbr 5106 ⟶wf 6551 ⟶1-1ontowf1o 6554 ‘cfv 6555 (class class class)co 7440 Basecbs 17413 Hom chom 17465 Catccat 17864 ≃𝑐 ccic 17996 CatCatccatc 18299 ThinCatcthinc 50755 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-1st 8022 df-2nd 8023 df-supp 8202 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-1o 8501 df-er 8742 df-map 8874 df-ixp 8951 df-en 8999 df-dom 9000 df-sdom 9001 df-fin 9002 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-nn 12360 df-2 12429 df-3 12430 df-4 12431 df-5 12432 df-6 12433 df-7 12434 df-8 12435 df-9 12436 df-n0 12631 df-z 12718 df-dec 12839 df-uz 12990 df-fz 13664 df-struct 17351 df-slot 17386 df-ndx 17398 df-base 17414 df-hom 17478 df-cco 17479 df-cat 17868 df-cid 17869 df-sect 17948 df-inv 17949 df-iso 17950 df-cic 17997 df-func 18059 df-idfu 18060 df-cofu 18061 df-full 18107 df-fth 18108 df-catc 18300 df-thinc 50756 |
| This theorem is used by: oduoppcciso 50907 |
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