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| Mirrors > Home > MPE Home > Th. List > cic | Structured version Visualization version GIF version | ||
| Description: Objects 𝑋 and 𝑌 in a category are isomorphic provided that there is an isomorphism 𝑓:𝑋⟶𝑌, see definition 3.15 of [Adamek] p. 29. (Contributed by AV, 4-Apr-2020.) |
| Ref | Expression |
|---|---|
| cic.i | ⊢ 𝐼 = (Iso‘𝐶) |
| cic.b | ⊢ 𝐵 = (Base‘𝐶) |
| cic.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| cic.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| cic.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| cic | ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑓 𝑓 ∈ (𝑋𝐼𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cic.i | . . 3 ⊢ 𝐼 = (Iso‘𝐶) | |
| 2 | cic.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 3 | cic.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 4 | cic.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 5 | cic.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 6 | 1, 2, 3, 4, 5 | brcic 17760 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ (𝑋𝐼𝑌) ≠ ∅)) |
| 7 | n0 4316 | . 2 ⊢ ((𝑋𝐼𝑌) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝑋𝐼𝑌)) | |
| 8 | 6, 7 | bitrdi 287 | 1 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑓 𝑓 ∈ (𝑋𝐼𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1540 ∃wex 1779 ∈ wcel 2109 ≠ wne 2925 ∅c0 4296 class class class wbr 5107 ‘cfv 6511 (class class class)co 7387 Basecbs 17179 Catccat 17625 Isociso 17708 ≃𝑐 ccic 17757 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-id 5533 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-oprab 7391 df-mpo 7392 df-1st 7968 df-2nd 7969 df-supp 8140 df-inv 17710 df-iso 17711 df-cic 17758 |
| This theorem is referenced by: brcici 17762 cicsym 17766 cictr 17767 initoeu1w 17974 initoeu2 17978 termoeu1w 17981 nzerooringczr 21390 thincciso 49442 thincciso4 49446 thinccic 49460 termfucterm 49533 uobeqterm 49535 |
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