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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 17705 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ (𝑋𝐼𝑌) ≠ ∅)) |
| 7 | n0 4300 | . 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 1541 ∃wex 1780 ∈ wcel 2111 ≠ wne 2928 ∅c0 4280 class class class wbr 5089 ‘cfv 6481 (class class class)co 7346 Basecbs 17120 Catccat 17570 Isociso 17653 ≃𝑐 ccic 17702 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-id 5509 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-ov 7349 df-oprab 7350 df-mpo 7351 df-1st 7921 df-2nd 7922 df-supp 8091 df-inv 17655 df-iso 17656 df-cic 17703 |
| This theorem is referenced by: brcici 17707 cicsym 17711 cictr 17712 initoeu1w 17919 initoeu2 17923 termoeu1w 17926 nzerooringczr 21417 thincciso 49553 thincciso4 49557 thinccic 49571 termfucterm 49644 uobeqterm 49646 |
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