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| Mirrors > Home > MPE Home > Th. List > Mathboxes > br1cossxrncnvepres | Structured version Visualization version GIF version | ||
| Description: 〈𝐵, 𝐶〉 and 〈𝐷, 𝐸〉 are cosets by a range Cartesian product with the restricted converse epsilon class: a binary relation. (Contributed by Peter Mazsa, 12-May-2021.) |
| Ref | Expression |
|---|---|
| br1cossxrncnvepres | ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) ∧ (𝐷 ∈ 𝑋 ∧ 𝐸 ∈ 𝑌)) → (〈𝐵, 𝐶〉 ≀ (𝑅 ⋉ (◡ E ↾ 𝐴))〈𝐷, 𝐸〉 ↔ ∃𝑢 ∈ 𝐴 ((𝐶 ∈ 𝑢 ∧ 𝑢𝑅𝐵) ∧ (𝐸 ∈ 𝑢 ∧ 𝑢𝑅𝐷)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | br1cossxrnres 38556 | . 2 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) ∧ (𝐷 ∈ 𝑋 ∧ 𝐸 ∈ 𝑌)) → (〈𝐵, 𝐶〉 ≀ (𝑅 ⋉ (◡ E ↾ 𝐴))〈𝐷, 𝐸〉 ↔ ∃𝑢 ∈ 𝐴 ((𝑢◡ E 𝐶 ∧ 𝑢𝑅𝐵) ∧ (𝑢◡ E 𝐸 ∧ 𝑢𝑅𝐷)))) | |
| 2 | brcnvep 38308 | . . . . . 6 ⊢ (𝑢 ∈ V → (𝑢◡ E 𝐶 ↔ 𝐶 ∈ 𝑢)) | |
| 3 | 2 | elv 3441 | . . . . 5 ⊢ (𝑢◡ E 𝐶 ↔ 𝐶 ∈ 𝑢) |
| 4 | 3 | anbi1i 624 | . . . 4 ⊢ ((𝑢◡ E 𝐶 ∧ 𝑢𝑅𝐵) ↔ (𝐶 ∈ 𝑢 ∧ 𝑢𝑅𝐵)) |
| 5 | brcnvep 38308 | . . . . . 6 ⊢ (𝑢 ∈ V → (𝑢◡ E 𝐸 ↔ 𝐸 ∈ 𝑢)) | |
| 6 | 5 | elv 3441 | . . . . 5 ⊢ (𝑢◡ E 𝐸 ↔ 𝐸 ∈ 𝑢) |
| 7 | 6 | anbi1i 624 | . . . 4 ⊢ ((𝑢◡ E 𝐸 ∧ 𝑢𝑅𝐷) ↔ (𝐸 ∈ 𝑢 ∧ 𝑢𝑅𝐷)) |
| 8 | 4, 7 | anbi12i 628 | . . 3 ⊢ (((𝑢◡ E 𝐶 ∧ 𝑢𝑅𝐵) ∧ (𝑢◡ E 𝐸 ∧ 𝑢𝑅𝐷)) ↔ ((𝐶 ∈ 𝑢 ∧ 𝑢𝑅𝐵) ∧ (𝐸 ∈ 𝑢 ∧ 𝑢𝑅𝐷))) |
| 9 | 8 | rexbii 3079 | . 2 ⊢ (∃𝑢 ∈ 𝐴 ((𝑢◡ E 𝐶 ∧ 𝑢𝑅𝐵) ∧ (𝑢◡ E 𝐸 ∧ 𝑢𝑅𝐷)) ↔ ∃𝑢 ∈ 𝐴 ((𝐶 ∈ 𝑢 ∧ 𝑢𝑅𝐵) ∧ (𝐸 ∈ 𝑢 ∧ 𝑢𝑅𝐷))) |
| 10 | 1, 9 | bitrdi 287 | 1 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑊) ∧ (𝐷 ∈ 𝑋 ∧ 𝐸 ∈ 𝑌)) → (〈𝐵, 𝐶〉 ≀ (𝑅 ⋉ (◡ E ↾ 𝐴))〈𝐷, 𝐸〉 ↔ ∃𝑢 ∈ 𝐴 ((𝐶 ∈ 𝑢 ∧ 𝑢𝑅𝐵) ∧ (𝐸 ∈ 𝑢 ∧ 𝑢𝑅𝐷)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2111 ∃wrex 3056 Vcvv 3436 〈cop 4581 class class class wbr 5093 E cep 5518 ◡ccnv 5618 ↾ cres 5621 ⋉ cxrn 38220 ≀ ccoss 38228 |
| 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 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pr 5372 ax-un 7674 |
| 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 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4283 df-if 4475 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-br 5094 df-opab 5156 df-mpt 5175 df-id 5514 df-eprel 5519 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-fo 6493 df-fv 6495 df-1st 7927 df-2nd 7928 df-xrn 38410 df-coss 38519 |
| This theorem is referenced by: (None) |
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