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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oppfvallem | Structured version Visualization version GIF version | ||
| Description: Lemma for oppfval 49633. (Contributed by Zhi Wang, 13-Nov-2025.) |
| Ref | Expression |
|---|---|
| oppfvallem | ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (Rel 𝐺 ∧ Rel dom 𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2740 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 2 | id 22 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐹(𝐶 Func 𝐷)𝐺) | |
| 3 | 1, 2 | funcfn2 17834 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐺 Fn ((Base‘𝐶) × (Base‘𝐶))) |
| 4 | fnrel 6594 | . . 3 ⊢ (𝐺 Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel 𝐺) | |
| 5 | 3, 4 | syl 17 | . 2 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → Rel 𝐺) |
| 6 | relxp 5643 | . . 3 ⊢ Rel ((Base‘𝐶) × (Base‘𝐶)) | |
| 7 | 3 | fndmd 6597 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → dom 𝐺 = ((Base‘𝐶) × (Base‘𝐶))) |
| 8 | 7 | releqd 5729 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (Rel dom 𝐺 ↔ Rel ((Base‘𝐶) × (Base‘𝐶)))) |
| 9 | 6, 8 | mpbiri 259 | . 2 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → Rel dom 𝐺) |
| 10 | 5, 9 | jca 516 | 1 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (Rel 𝐺 ∧ Rel dom 𝐺)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 class class class wbr 5079 × cxp 5623 dom cdm 5625 Rel wrel 5630 Fn wfn 6487 ‘cfv 6492 (class class class)co 7363 Basecbs 17177 Func cfunc 17819 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-rep 5206 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-fv 6500 df-ov 7366 df-oprab 7367 df-mpo 7368 df-map 8772 df-ixp 8843 df-func 17823 |
| This theorem is referenced by: oppfval 49633 |
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