| 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 6933 | . . 3 ⊢ (Fun 𝐹 → (𝑥𝐹𝐴 → (𝐹‘𝑥) = 𝐴)) | |
| 2 | 1 | reximdv 3177 | . 2 ⊢ (Fun 𝐹 → (∃𝑥 ∈ 𝐵 𝑥𝐹𝐴 → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴)) |
| 3 | elimag 6059 | . . 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 515 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ (𝐹 “ 𝐵)) → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∃wrex 3086 class class class wbr 5102 “ cima 5653 Fun wfun 6532 ‘cfv 6538 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fv 6546 |
| This theorem is used by: funimassd 6951 ssimaex 6970 isofrlem 7348 fimaproj 8154 tz7.49 8458 rankwflemb 9803 rankwflembOLD 9804 tcrank 9904 zorn2lem5 10581 zorn2lem6 10582 uniimadom 10631 wunr1om 10807 tskr1om 10855 tskhf 10856 grur1 10908 imadrhmcl 21059 iscldtop 23418 kqfvima 24054 fmfnfmlem4 24281 fmfnfm 24282 qustgpopn 24444 cphsscph 25577 c1liplem1 26321 plypf1 26536 lrrecfr 28334 ltgseg 29064 axcontlem9 29555 uhgrspan1 29889 pthdlem2lem 30358 htthlem 31524 xrofsup 33405 tocyccntz 33751 rhmimaidl 34028 esplymhp 34246 dimval 34279 dimvalfi 34280 txomap 34512 qtophaus 34514 acwer1prc 35816 erdszelem7 36048 erdszelem8 36049 mrsub0 36367 mrsubccat 36369 mrsubcn 36370 msubrn 36380 mthmblem 36431 ivthALT 37215 weiunfr 37347 ftc2nc 38713 heibor1lem 38836 aks6d1c4 43267 imacrhmcl 43674 ismrc 43805 relpfrlem 46036 icccncfext 46990 dirkercncflem2 47207 smfpimbor1lem1 47901 imaf1co 50364 |
| Copyright terms: Public domain | W3C validator |