| 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 6936 | . . 3 ⊢ (Fun 𝐹 → (𝑥𝐹𝐴 → (𝐹‘𝑥) = 𝐴)) | |
| 2 | 1 | reximdv 3183 | . 2 ⊢ (Fun 𝐹 → (∃𝑥 ∈ 𝐵 𝑥𝐹𝐴 → ∃𝑥 ∈ 𝐵 (𝐹‘𝑥) = 𝐴)) |
| 3 | elimag 6071 | . . 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 1570 ∈ wcel 2146 ∃wrex 3092 class class class wbr 5114 “ cima 5669 Fun wfun 6537 ‘cfv 6543 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-pr 5409 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-id 5561 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-iota 6499 df-fun 6545 df-fv 6551 |
| This theorem is used by: funimassd 6954 ssimaex 6973 isofrlem 7349 fimaproj 8140 tz7.49 8441 rankwflemb 9775 tcrank 9866 zorn2lem5 10502 zorn2lem6 10503 uniimadom 10546 wunr1om 10722 tskr1om 10770 tskr1om2 10771 grur1 10823 imadrhmcl 20937 iscldtop 23289 kqfvima 23924 fmfnfmlem4 24151 fmfnfm 24152 qustgpopn 24314 cphsscph 25447 c1liplem1 26192 plypf1 26406 lrrecfr 28173 ltgseg 28902 axcontlem9 29359 uhgrspan1 29690 pthdlem2lem 30153 htthlem 31306 xrofsup 33149 tocyccntz 33495 rhmimaidl 33771 esplymhp 33989 dimval 34022 dimvalfi 34023 txomap 34255 qtophaus 34257 erdszelem7 35710 erdszelem8 35711 mrsub0 36029 mrsubccat 36031 mrsubcn 36032 msubrn 36042 mthmblem 36093 ivthALT 36887 weiunfr 37019 ftc2nc 38394 heibor1lem 38501 aks6d1c4 42932 imacrhmcl 43329 ismrc 43473 relpfrlem 45703 icccncfext 46642 dirkercncflem2 46859 smfpimbor1lem1 47553 imaf1co 49974 |
| Copyright terms: Public domain | W3C validator |