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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 17854 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ (𝑋𝐼𝑌) ≠ ∅)) |
| 7 | n0 4315 | . 2 ⊢ ((𝑋𝐼𝑌) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝑋𝐼𝑌)) | |
| 8 | 6, 7 | bitrdi 290 | 1 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑓 𝑓 ∈ (𝑋𝐼𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1567 ∃wex 1806 ∈ wcel 2149 ≠ wne 2964 ∅c0 4294 class class class wbr 5113 ‘cfv 6537 (class class class)co 7411 Basecbs 17268 Catccat 17719 Isociso 17802 ≃𝑐 ccic 17851 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7985 df-2nd 7986 df-supp 8156 df-inv 17804 df-iso 17805 df-cic 17852 |
| This theorem is referenced by: brcici 17856 cicsym 17860 cictr 17861 initoeu1w 18068 initoeu2 18072 termoeu1w 18075 nzerooringczr 21598 thincciso 50115 thincciso4 50119 thinccic 50133 termfucterm 50206 uobeqterm 50208 |
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