| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > fvelima | Structured version Visualization version GIF version | ||
| Description: Function value in an image. Part of Theorem 4.4(iii) of [Monk1] p. 42. (Contributed by NM, 29-Apr-2004.) (Proof shortened by Andrew Salmon, 22-Oct-2011.) |
| Ref | Expression |
|---|---|
| fvelima | ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ (𝐹 “ 𝐵)) → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funbrfv 6909 | . . 3 ⊢ (Fun 𝐹 → (𝑥𝐹𝐴 → (𝐹‘𝑥) = 𝐴)) | |
| 2 | 1 | reximdv 3176 | . 2 ⊢ (Fun 𝐹 → (∃𝑥 ∈ 𝐵 𝑥𝐹𝐴 → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴)) |
| 3 | elimag 6048 | . . 3 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → (𝐴 ∈ (𝐹 “ 𝐵) ↔ ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴)) | |
| 4 | 3 | ibi 269 | . 2 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴) |
| 5 | 2, 4 | impel 513 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ (𝐹 “ 𝐵)) → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1559 ∈ wcel 2141 ∃wrex 3085 class class class wbr 5097 “ cima 5646 Fun wfun 6509 ‘cfv 6515 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-pr 5387 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-id 5538 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-iota 6471 df-fun 6517 df-fv 6523 |
| This theorem is referenced by: funimassd 6927 ssimaex 6946 isofrlem 7318 fimaproj 8108 tz7.49 8409 rankwflemb 9744 tcrank 9835 zorn2lem5 10450 zorn2lem6 10451 uniimadom 10494 wunr1om 10670 tskr1om 10718 tskr1om2 10719 grur1 10771 imadrhmcl 20833 iscldtop 23142 kqfvima 23777 fmfnfmlem4 24004 fmfnfm 24005 qustgpopn 24167 cphsscph 25300 c1liplem1 26045 plypf1 26259 lrrecfr 28023 ltgseg 28752 axcontlem9 29129 uhgrspan1 29460 pthdlem2lem 29923 htthlem 31076 xrofsup 32929 tocyccntz 33284 rhmimaidl 33578 esplymhp 33825 dimval 33858 dimvalfi 33859 txomap 34091 qtophaus 34093 erdszelem7 35507 erdszelem8 35508 mrsub0 35826 mrsubccat 35828 mrsubcn 35829 msubrn 35839 mthmblem 35890 ivthALT 36655 weiunfr 36787 ftc2nc 38161 heibor1lem 38268 aks6d1c4 42701 imacrhmcl 43096 ismrc 43242 relpfrlem 45489 icccncfext 46421 dirkercncflem2 46638 smfpimbor1lem1 47332 imaf1co 49736 |
| Copyright terms: Public domain | W3C validator |