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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 17695 | . . . 4 ⊢ (𝜑 → (𝑋𝑁𝑌) = ((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))) |
| 8 | 7 | breqd 5111 | . . 3 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ 𝐹((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))𝐺)) |
| 9 | brin 5152 | . . 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 2737 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 12 | eqid 2737 | . . . . . 6 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
| 13 | eqid 2737 | . . . . . 6 ⊢ (Id‘𝐶) = (Id‘𝐶) | |
| 14 | 1, 11, 12, 13, 6, 3, 5, 4 | sectss 17688 | . . . . 5 ⊢ (𝜑 → (𝑌𝑆𝑋) ⊆ ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌))) |
| 15 | relxp 5650 | . . . . 5 ⊢ Rel ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌)) | |
| 16 | relss 5739 | . . . . 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 6072 | . . . 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 631 | . 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 1542 ∈ wcel 2114 ∩ cin 3902 ⊆ wss 3903 class class class wbr 5100 × cxp 5630 ◡ccnv 5631 Rel wrel 5637 ‘cfv 6500 (class class class)co 7368 Basecbs 17148 Hom chom 17200 compcco 17201 Catccat 17599 Idccid 17600 Sectcsect 17680 Invcinv 17681 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-ov 7371 df-oprab 7372 df-mpo 7373 df-1st 7943 df-2nd 7944 df-sect 17683 df-inv 17684 |
| This theorem is referenced by: invsym 17698 invfun 17700 invco 17707 inveq 17710 monsect 17719 invid 17723 invcoisoid 17728 isocoinvid 17729 funcinv 17809 fthinv 17864 fucinv 17912 invfuc 17913 2initoinv 17946 2termoinv 17953 setcinv 18026 catcisolem 18046 catciso 18047 rngcinv 20582 ringcinv 20616 rngcinvALTV 48633 ringcinvALTV 48667 isinv2 49382 thincinv 49825 |
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