![]() |
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 6943 | . . 3 ⊢ (Fun 𝐹 → (𝑥𝐹𝐴 → (𝐹‘𝑥) = 𝐴)) | |
2 | 1 | reximdv 3171 | . 2 ⊢ (Fun 𝐹 → (∃𝑥 ∈ 𝐵 𝑥𝐹𝐴 → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴)) |
3 | elimag 6064 | . . 3 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → (𝐴 ∈ (𝐹 “ 𝐵) ↔ ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴)) | |
4 | 3 | ibi 267 | . 2 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴) |
5 | 2, 4 | impel 507 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ (𝐹 “ 𝐵)) → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ∃wrex 3071 class class class wbr 5149 “ cima 5680 Fun wfun 6538 ‘cfv 6544 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-12 2172 ax-ext 2704 ax-sep 5300 ax-nul 5307 ax-pr 5428 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-ral 3063 df-rex 3072 df-rab 3434 df-v 3477 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-nul 4324 df-if 4530 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-br 5150 df-opab 5212 df-id 5575 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-iota 6496 df-fun 6546 df-fv 6552 |
This theorem is referenced by: funimassd 6959 ssimaex 6977 isofrlem 7337 fimaproj 8121 tz7.49 8445 rankwflemb 9788 tcrank 9879 zorn2lem5 10495 zorn2lem6 10496 uniimadom 10539 wunr1om 10714 tskr1om 10762 tskr1om2 10763 grur1 10815 imadrhmcl 20413 iscldtop 22599 kqfvima 23234 fmfnfmlem4 23461 fmfnfm 23462 qustgpopn 23624 cphsscph 24768 c1liplem1 25513 plypf1 25726 lrrecfr 27429 ltgseg 27878 axcontlem9 28261 uhgrspan1 28591 pthdlem2lem 29055 htthlem 30201 xrofsup 32011 tocyccntz 32334 rhmimaidl 32581 dimval 32717 dimvalfi 32718 txomap 32845 qtophaus 32847 erdszelem7 34219 erdszelem8 34220 mrsub0 34538 mrsubccat 34540 mrsubcn 34541 msubrn 34551 mthmblem 34602 ivthALT 35268 ftc2nc 36618 heibor1lem 36725 imacrhmcl 41137 ismrc 41487 icccncfext 44651 dirkercncflem2 44868 smfpimbor1lem1 45562 |
Copyright terms: Public domain | W3C validator |