| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > funfvima2 | Structured version Visualization version GIF version | ||
| Description: A function's value in an included preimage belongs to the image. (Contributed by NM, 3-Feb-1997.) |
| Ref | Expression |
|---|---|
| funfvima2 | ⊢ ((Fun 𝐹 ∧ 𝐴 ⊆ dom 𝐹) → (𝐵 ∈ 𝐴 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funfvima 7186 | . . . . 5 ⊢ ((Fun 𝐹 ∧ 𝐵 ∈ dom 𝐹) → (𝐵 ∈ 𝐴 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴))) | |
| 2 | 1 | ex 412 | . . . 4 ⊢ (Fun 𝐹 → (𝐵 ∈ dom 𝐹 → (𝐵 ∈ 𝐴 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴)))) |
| 3 | 2 | com23 86 | . . 3 ⊢ (Fun 𝐹 → (𝐵 ∈ 𝐴 → (𝐵 ∈ dom 𝐹 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴)))) |
| 4 | 3 | a2d 29 | . 2 ⊢ (Fun 𝐹 → ((𝐵 ∈ 𝐴 → 𝐵 ∈ dom 𝐹) → (𝐵 ∈ 𝐴 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴)))) |
| 5 | ssel 3929 | . 2 ⊢ (𝐴 ⊆ dom 𝐹 → (𝐵 ∈ 𝐴 → 𝐵 ∈ dom 𝐹)) | |
| 6 | 4, 5 | impel 505 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ⊆ dom 𝐹) → (𝐵 ∈ 𝐴 → (𝐹‘𝐵) ∈ (𝐹 “ 𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 ⊆ wss 3903 dom cdm 5632 “ cima 5635 Fun wfun 6494 ‘cfv 6500 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pr 5379 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-fv 6508 |
| This theorem is referenced by: funfvima2d 7188 fnfvima 7189 resfvresima 7191 f1oweALT 7926 tz7.49 8386 phimullem 16718 mrcuni 17556 frlmsslsp 21763 lindfrn 21788 iscldtop 23051 1stcfb 23401 2ndcomap 23414 rnelfm 23909 fmfnfmlem2 23911 fmfnfmlem4 23913 qtopbaslem 24714 tgqioo 24756 bndth 24925 volsup 25525 dyadmbllem 25568 opnmbllem 25570 itg1addlem4 25668 c1liplem1 25969 dvcnvrelem1 25990 dvcnvrelem2 25991 plyco0 26165 plyaddlem1 26186 plymullem1 26187 dvloglem 26625 logf1o2 26627 efopn 26635 nobdaymin 27761 nocvxminlem 27762 axcontlem10 29058 imaelshi 32145 funimass4f 32726 sitgclg 34519 cvmliftlem3 35500 ivthALT 36548 opnmbllem0 37904 ismtyres 38056 heibor1lem 38057 ismrc 43055 aomclem4 43411 |
| Copyright terms: Public domain | W3C validator |