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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oppfvallem | Structured version Visualization version GIF version | ||
| Description: Lemma for oppfval 50062. (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 2760 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 2 | id 23 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐹(𝐶 Func 𝐷)𝐺) | |
| 3 | 1, 2 | funcfn2 17958 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐺 Fn ((Base‘𝐶) × (Base‘𝐶))) |
| 4 | fnrel 6634 | . . 3 ⊢ (𝐺 Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel 𝐺) | |
| 5 | 3, 4 | syl 18 | . 2 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → Rel 𝐺) |
| 6 | relxp 5673 | . . 3 ⊢ Rel ((Base‘𝐶) × (Base‘𝐶)) | |
| 7 | 3 | fndmd 6637 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → dom 𝐺 = ((Base‘𝐶) × (Base‘𝐶))) |
| 8 | 7 | releqd 5759 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (Rel dom 𝐺 ↔ Rel ((Base‘𝐶) × (Base‘𝐶)))) |
| 9 | 6, 8 | mpbiri 261 | . 2 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → Rel dom 𝐺) |
| 10 | 5, 9 | jca 521 | 1 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (Rel 𝐺 ∧ Rel dom 𝐺)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 class class class wbr 5103 × cxp 5653 dom cdm 5655 Rel wrel 5660 Fn wfn 6528 ‘cfv 6533 (class class class)co 7413 Basecbs 17301 Func cfunc 17943 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-fv 6541 df-ov 7416 df-oprab 7417 df-mpo 7418 df-map 8828 df-ixp 8905 df-func 17947 |
| This theorem is used by: oppfval 50062 |
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