| 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 6931 | . . 3 ⊢ (Fun 𝐹 → (𝑥𝐹𝐴 → (𝐹‘𝑥) = 𝐴)) | |
| 2 | 1 | reximdv 3180 | . 2 ⊢ (Fun 𝐹 → (∃𝑥 ∈ 𝐵 𝑥𝐹𝐴 → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴)) |
| 3 | elimag 6068 | . . 3 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → (𝐴 ∈ (𝐹 “ 𝐵) ↔ ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴)) | |
| 4 | 3 | ibi 270 | . 2 ⊢ (𝐴 ∈ (𝐹 “ 𝐵) → ∃𝑥 ∈ 𝐵 𝑥𝐹𝐴) |
| 5 | 2, 4 | impel 514 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ (𝐹 “ 𝐵)) → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1570 ∈ wcel 2143 ∃wrex 3089 class class class wbr 5110 “ cima 5666 Fun wfun 6532 ‘cfv 6538 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6494 df-fun 6540 df-fv 6546 |
| This theorem is referenced by: funimassd 6949 ssimaex 6968 isofrlem 7340 fimaproj 8132 tz7.49 8433 rankwflemb 9766 tcrank 9857 zorn2lem5 10485 zorn2lem6 10486 uniimadom 10529 wunr1om 10705 tskr1om 10753 tskr1om2 10754 grur1 10806 imadrhmcl 20881 iscldtop 23233 kqfvima 23868 fmfnfmlem4 24095 fmfnfm 24096 qustgpopn 24258 cphsscph 25391 c1liplem1 26136 plypf1 26350 lrrecfr 28117 ltgseg 28846 axcontlem9 29303 uhgrspan1 29634 pthdlem2lem 30097 htthlem 31250 xrofsup 33093 tocyccntz 33445 rhmimaidl 33721 esplymhp 33939 dimval 33972 dimvalfi 33973 txomap 34205 qtophaus 34207 erdszelem7 35670 erdszelem8 35671 mrsub0 35989 mrsubccat 35991 mrsubcn 35992 msubrn 36002 mthmblem 36053 ivthALT 36827 weiunfr 36959 ftc2nc 38334 heibor1lem 38441 aks6d1c4 42872 imacrhmcl 43269 ismrc 43415 relpfrlem 45645 icccncfext 46584 dirkercncflem2 46801 smfpimbor1lem1 47495 imaf1co 49916 |
| Copyright terms: Public domain | W3C validator |