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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oppfvallem | Structured version Visualization version GIF version | ||
| Description: Lemma for oppfval 50583. (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 2763 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 2 | id 23 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐹(𝐶 Func 𝐷)𝐺) | |
| 3 | 1, 2 | funcfn2 18094 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → 𝐺 Fn ((Base‘𝐶) × (Base‘𝐶))) |
| 4 | fnrel 6671 | . . 3 ⊢ (𝐺 Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel 𝐺) | |
| 5 | 3, 4 | syl 18 | . 2 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → Rel 𝐺) |
| 6 | relxp 5676 | . . 3 ⊢ Rel ((Base‘𝐶) × (Base‘𝐶)) | |
| 7 | 3 | fndmd 6674 | . . . 4 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → dom 𝐺 = ((Base‘𝐶) × (Base‘𝐶))) |
| 8 | 7 | releqd 5763 | . . 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 5108 × cxp 5656 dom cdm 5658 Rel wrel 5663 Fn wfn 6561 ‘cfv 6566 (class class class)co 7451 Basecbs 17431 Func cfunc 18079 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-map 8887 df-ixp 8964 df-func 18083 |
| This theorem is used by: oppfval 50583 |
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