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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 17722 | . 2 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ (𝑋𝐼𝑌) ≠ ∅)) |
| 7 | n0 4305 | . 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 2113 ≠ wne 2932 ∅c0 4285 class class class wbr 5098 ‘cfv 6492 (class class class)co 7358 Basecbs 17136 Catccat 17587 Isociso 17670 ≃𝑐 ccic 17719 |
| 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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-1st 7933 df-2nd 7934 df-supp 8103 df-inv 17672 df-iso 17673 df-cic 17720 |
| This theorem is referenced by: brcici 17724 cicsym 17728 cictr 17729 initoeu1w 17936 initoeu2 17940 termoeu1w 17943 nzerooringczr 21435 thincciso 49698 thincciso4 49702 thinccic 49716 termfucterm 49789 uobeqterm 49791 |
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