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| Mirrors > Home > MPE Home > Th. List > isinv | Structured version Visualization version GIF version | ||
| Description: Value of the inverse relation. (Contributed by Mario Carneiro, 2-Jan-2017.) |
| Ref | Expression |
|---|---|
| invfval.b | ⊢ 𝐵 = (Base‘𝐶) |
| invfval.n | ⊢ 𝑁 = (Inv‘𝐶) |
| invfval.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| invfval.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| invfval.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| invfval.s | ⊢ 𝑆 = (Sect‘𝐶) |
| Ref | Expression |
|---|---|
| isinv | ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐺(𝑌𝑆𝑋)𝐹))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | invfval.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | invfval.n | . . . . 5 ⊢ 𝑁 = (Inv‘𝐶) | |
| 3 | invfval.c | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 4 | invfval.x | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 5 | invfval.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 6 | invfval.s | . . . . 5 ⊢ 𝑆 = (Sect‘𝐶) | |
| 7 | 1, 2, 3, 4, 5, 6 | invfval 17683 | . . . 4 ⊢ (𝜑 → (𝑋𝑁𝑌) = ((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))) |
| 8 | 7 | breqd 5109 | . . 3 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ 𝐹((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))𝐺)) |
| 9 | brin 5150 | . . 3 ⊢ (𝐹((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺)) | |
| 10 | 8, 9 | bitrdi 287 | . 2 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺))) |
| 11 | eqid 2736 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 12 | eqid 2736 | . . . . . 6 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
| 13 | eqid 2736 | . . . . . 6 ⊢ (Id‘𝐶) = (Id‘𝐶) | |
| 14 | 1, 11, 12, 13, 6, 3, 5, 4 | sectss 17676 | . . . . 5 ⊢ (𝜑 → (𝑌𝑆𝑋) ⊆ ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌))) |
| 15 | relxp 5642 | . . . . 5 ⊢ Rel ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌)) | |
| 16 | relss 5731 | . . . . 5 ⊢ ((𝑌𝑆𝑋) ⊆ ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌)) → (Rel ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌)) → Rel (𝑌𝑆𝑋))) | |
| 17 | 14, 15, 16 | mpisyl 21 | . . . 4 ⊢ (𝜑 → Rel (𝑌𝑆𝑋)) |
| 18 | relbrcnvg 6064 | . . . 4 ⊢ (Rel (𝑌𝑆𝑋) → (𝐹◡(𝑌𝑆𝑋)𝐺 ↔ 𝐺(𝑌𝑆𝑋)𝐹)) | |
| 19 | 17, 18 | syl 17 | . . 3 ⊢ (𝜑 → (𝐹◡(𝑌𝑆𝑋)𝐺 ↔ 𝐺(𝑌𝑆𝑋)𝐹)) |
| 20 | 19 | anbi2d 630 | . 2 ⊢ (𝜑 → ((𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺) ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐺(𝑌𝑆𝑋)𝐹))) |
| 21 | 10, 20 | bitrd 279 | 1 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐺(𝑌𝑆𝑋)𝐹))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∩ cin 3900 ⊆ wss 3901 class class class wbr 5098 × cxp 5622 ◡ccnv 5623 Rel wrel 5629 ‘cfv 6492 (class class class)co 7358 Basecbs 17136 Hom chom 17188 compcco 17189 Catccat 17587 Idccid 17588 Sectcsect 17668 Invcinv 17669 |
| 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-sect 17671 df-inv 17672 |
| This theorem is referenced by: invsym 17686 invfun 17688 invco 17695 inveq 17698 monsect 17707 invid 17711 invcoisoid 17716 isocoinvid 17717 funcinv 17797 fthinv 17852 fucinv 17900 invfuc 17901 2initoinv 17934 2termoinv 17941 setcinv 18014 catcisolem 18034 catciso 18035 rngcinv 20570 ringcinv 20604 rngcinvALTV 48522 ringcinvALTV 48556 isinv2 49271 thincinv 49714 |
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