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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 17783 | . . . 4 ⊢ (𝜑 → (𝑋𝑁𝑌) = ((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))) |
| 8 | 7 | breqd 5108 | . . 3 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ 𝐹((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))𝐺)) |
| 9 | brin 5149 | . . 3 ⊢ (𝐹((𝑋𝑆𝑌) ∩ ◡(𝑌𝑆𝑋))𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺)) | |
| 10 | 8, 9 | bitrdi 289 | . 2 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺))) |
| 11 | eqid 2761 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 12 | eqid 2761 | . . . . . 6 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
| 13 | eqid 2761 | . . . . . 6 ⊢ (Id‘𝐶) = (Id‘𝐶) | |
| 14 | 1, 11, 12, 13, 6, 3, 5, 4 | sectss 17776 | . . . . 5 ⊢ (𝜑 → (𝑌𝑆𝑋) ⊆ ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌))) |
| 15 | relxp 5661 | . . . . 5 ⊢ Rel ((𝑌(Hom ‘𝐶)𝑋) × (𝑋(Hom ‘𝐶)𝑌)) | |
| 16 | relss 5750 | . . . . 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 6090 | . . . 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 639 | . 2 ⊢ (𝜑 → ((𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐹◡(𝑌𝑆𝑋)𝐺) ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐺(𝑌𝑆𝑋)𝐹))) |
| 21 | 10, 20 | bitrd 281 | 1 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)𝐺 ↔ (𝐹(𝑋𝑆𝑌)𝐺 ∧ 𝐺(𝑌𝑆𝑋)𝐹))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1559 ∈ wcel 2141 ∩ cin 3901 ⊆ wss 3902 class class class wbr 5097 × cxp 5641 ◡ccnv 5642 Rel wrel 5648 ‘cfv 6516 (class class class)co 7391 Basecbs 17236 Hom chom 17288 compcco 17289 Catccat 17687 Idccid 17688 Sectcsect 17768 Invcinv 17769 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5224 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7713 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-id 5538 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-ov 7394 df-oprab 7395 df-mpo 7396 df-1st 7965 df-2nd 7966 df-sect 17771 df-inv 17772 |
| This theorem is referenced by: invsym 17786 invfun 17788 invco 17795 inveq 17798 monsect 17807 invid 17811 invcoisoid 17816 isocoinvid 17817 funcinv 17897 fthinv 17952 fucinv 18000 invfuc 18001 2initoinv 18034 2termoinv 18041 setcinv 18114 catcisolem 18134 catciso 18135 rngcinv 20674 ringcinv 20708 rngcinvALTV 48859 ringcinvALTV 48893 isinv2 49608 thincinv 50051 |
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