| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > funfvbrb | Structured version Visualization version GIF version | ||
| Description: Two ways to say that 𝐴 is in the domain of 𝐹. (Contributed by Mario Carneiro, 1-May-2014.) |
| Ref | Expression |
|---|---|
| funfvbrb | ⊢ (Fun 𝐹 → (𝐴 ∈ dom 𝐹 ↔ 𝐴𝐹(𝐹‘𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funfvop 7080 | . . 3 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ dom 𝐹) → 〈𝐴, (𝐹‘𝐴)〉 ∈ 𝐹) | |
| 2 | df-br 5109 | . . 3 ⊢ (𝐴𝐹(𝐹‘𝐴) ↔ 〈𝐴, (𝐹‘𝐴)〉 ∈ 𝐹) | |
| 3 | 1, 2 | sylibr 237 | . 2 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ dom 𝐹) → 𝐴𝐹(𝐹‘𝐴)) |
| 4 | funrel 6584 | . . 3 ⊢ (Fun 𝐹 → Rel 𝐹) | |
| 5 | releldm 5938 | . . 3 ⊢ ((Rel 𝐹 ∧ 𝐴𝐹(𝐹‘𝐴)) → 𝐴 ∈ dom 𝐹) | |
| 6 | 4, 5 | sylan 592 | . 2 ⊢ ((Fun 𝐹 ∧ 𝐴𝐹(𝐹‘𝐴)) → 𝐴 ∈ dom 𝐹) |
| 7 | 3, 6 | impbida 813 | 1 ⊢ (Fun 𝐹 → (𝐴 ∈ dom 𝐹 ↔ 𝐴𝐹(𝐹‘𝐴))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2147 〈cop 4840 class class class wbr 5108 dom cdm 5658 Rel wrel 5663 Fun wfun 6560 ‘cfv 6566 |
| 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-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pr 5398 |
| 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-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-iota 6520 df-fun 6568 df-fn 6569 df-fv 6574 |
| This theorem is used by: fmptco 7162 fpwwe2lem12 10766 fpwwe2 10767 climdm 15765 invco 17996 ffthiso 18156 fuciso 18203 setciso 18316 catciso 18336 rngciso 20941 ringciso 20975 lmcau 25689 dvcnp 26294 dvadd 26315 dvmul 26316 dvaddf 26317 dvmulf 26318 dvco 26322 dvcof 26323 dvcjbr 26324 dvcnvlem 26351 dvferm1 26360 dvferm2 26362 ulmdm 26777 ulmdvlem3 26786 minvecolem4a 31536 hlimf 31896 hhsscms 31937 occllem 31962 occl 31963 chscllem4 32299 fmptcof2 33349 heiborlem9 39019 bfplem1 39022 iscard4 44795 xlimdm 47140 rngcisoALTV 49647 ringcisoALTV 49681 ffvbr 50298 |
| Copyright terms: Public domain | W3C validator |