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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 6775 | . . . . 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 6850 | . . . . 5 ⊢ (𝜑 → (Base‘𝑋) ∈ V) | |
| 6 | 4, 5 | eqeltrid 2841 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 7 | 3, 6 | fexd 7175 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
| 8 | thinccisod.1 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑅)) → ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) | |
| 9 | 8 | ralrimivva 3180 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 10 | 9, 1 | jca 511 | . . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝑅 ∀𝑦 ∈ 𝑅 ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅) ∧ 𝐹:𝑅–1-1-onto→𝑆)) |
| 11 | fveq1 6834 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑥) = (𝐹‘𝑥)) | |
| 12 | fveq1 6834 | . . . . . . . 8 ⊢ (𝑓 = 𝐹 → (𝑓‘𝑦) = (𝐹‘𝑦)) | |
| 13 | 11, 12 | oveq12d 7378 | . . . . . . 7 ⊢ (𝑓 = 𝐹 → ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦))) |
| 14 | 13 | eqeq1d 2739 | . . . . . 6 ⊢ (𝑓 = 𝐹 → (((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅)) |
| 15 | 14 | bibi2d 342 | . . . . 5 ⊢ (𝑓 = 𝐹 → (((𝑥𝐻𝑦) = ∅ ↔ ((𝑓‘𝑥)𝐽(𝑓‘𝑦)) = ∅) ↔ ((𝑥𝐻𝑦) = ∅ ↔ ((𝐹‘𝑥)𝐽(𝐹‘𝑦)) = ∅))) |
| 16 | 15 | 2ralbidv 3201 | . . . 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 6763 | . . . 4 ⊢ (𝑓 = 𝐹 → (𝑓:𝑅–1-1-onto→𝑆 ↔ 𝐹:𝑅–1-1-onto→𝑆)) | |
| 18 | 16, 17 | anbi12d 633 | . . 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 3553 | . 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 2737 | . . 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 49735 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Cat) |
| 29 | 26, 28 | elind 4153 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Cat)) |
| 30 | 20, 21, 25 | catcbas 18029 | . . . 4 ⊢ (𝜑 → (Base‘𝐶) = (𝑈 ∩ Cat)) |
| 31 | 29, 30 | eleqtrrd 2840 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) |
| 32 | thinccisod.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝑈) | |
| 33 | thinccisod.yt | . . . . . 6 ⊢ (𝜑 → 𝑌 ∈ ThinCat) | |
| 34 | 33 | thinccd 49735 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ Cat) |
| 35 | 32, 34 | elind 4153 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ (𝑈 ∩ Cat)) |
| 36 | 35, 30 | eleqtrrd 2840 | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐶)) |
| 37 | 20, 21, 4, 22, 23, 24, 25, 31, 36, 27, 33 | thincciso 49765 | . 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 257 | 1 ⊢ (𝜑 → 𝑋( ≃𝑐 ‘𝐶)𝑌) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∃wex 1781 ∈ wcel 2114 ∀wral 3052 Vcvv 3441 ∩ cin 3901 ∅c0 4286 class class class wbr 5099 ⟶wf 6489 –1-1-onto→wf1o 6492 ‘cfv 6493 (class class class)co 7360 Basecbs 17140 Hom chom 17192 Catccat 17591 ≃𝑐 ccic 17723 CatCatccatc 18026 ThinCatcthinc 49729 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-tp 4586 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-supp 8105 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-map 8769 df-ixp 8840 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12150 df-2 12212 df-3 12213 df-4 12214 df-5 12215 df-6 12216 df-7 12217 df-8 12218 df-9 12219 df-n0 12406 df-z 12493 df-dec 12612 df-uz 12756 df-fz 13428 df-struct 17078 df-slot 17113 df-ndx 17125 df-base 17141 df-hom 17205 df-cco 17206 df-cat 17595 df-cid 17596 df-sect 17675 df-inv 17676 df-iso 17677 df-cic 17724 df-func 17786 df-idfu 17787 df-cofu 17788 df-full 17834 df-fth 17835 df-catc 18027 df-thinc 49730 |
| This theorem is referenced by: oduoppcciso 49878 |
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