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| Mirrors > Home > ILE Home > Th. List > fvexg | GIF version | ||
| Description: Evaluating a set function at a set exists. (Contributed by Mario Carneiro and Jim Kingdon, 28-May-2019.) |
| Ref | Expression |
|---|---|
| fvexg | ⊢ ((𝐹 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐹‘𝐴) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 2833 | . . 3 ⊢ (𝐴 ∈ 𝑊 → 𝐴 ∈ V) | |
| 2 | fvssunirng 5710 | . . 3 ⊢ (𝐴 ∈ V → (𝐹‘𝐴) ⊆ ∪ ran 𝐹) | |
| 3 | 1, 2 | syl 14 | . 2 ⊢ (𝐴 ∈ 𝑊 → (𝐹‘𝐴) ⊆ ∪ ran 𝐹) |
| 4 | rnexg 5047 | . . 3 ⊢ (𝐹 ∈ 𝑉 → ran 𝐹 ∈ V) | |
| 5 | uniexg 4585 | . . 3 ⊢ (ran 𝐹 ∈ V → ∪ ran 𝐹 ∈ V) | |
| 6 | 4, 5 | syl 14 | . 2 ⊢ (𝐹 ∈ 𝑉 → ∪ ran 𝐹 ∈ V) |
| 7 | ssexg 4272 | . 2 ⊢ (((𝐹‘𝐴) ⊆ ∪ ran 𝐹 ∧ ∪ ran 𝐹 ∈ V) → (𝐹‘𝐴) ∈ V) | |
| 8 | 3, 6, 7 | syl2anr 290 | 1 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐹‘𝐴) ∈ V) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∈ wcel 2209 Vcvv 2821 ⊆ wss 3220 ∪ cuni 3935 ran crn 4775 ‘cfv 5377 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-cnv 4782 df-dm 4784 df-rn 4785 df-iota 5337 df-fv 5385 |
| This theorem is used by: fvex 5715 ovexg 6119 suppval1 6479 suppimacnvfn 6486 suppssrst 6501 suppssrgst 6502 rdgivallem 6652 frecabex 6669 mapsnconst 6976 mapsnend 7099 cc2lem 7632 addvalex 8211 uzennn 10875 seq1g 10902 seqp1g 10905 seqclg 10911 seqm1g 10913 seqfeq4g 10970 lswwrd 11353 ccatlen 11365 ccatval2 11368 ccatvalfn 11371 ccatalpha 11383 eqs1 11398 swrdlen 11426 swrdfv 11427 swrdwrdsymbg 11438 swrdswrd 11479 absval 11769 climmpt 12068 strnfvnd 13374 imasex 13628 imasival 13629 imasbas 13630 imasplusg 13631 imasmulr 13632 imasaddfnlemg 13637 imasaddvallemg 13638 gzsumfzval 13713 gzsumval2 13716 gzsumsplit1r 13717 gzsumwsubmcl 13803 gzsumcl 13806 grpsubval 13853 mulgval 13927 mulgfng 13929 mulgnngzsum 13932 prdsex 14174 prdsval 14175 prdsbaslemss 14176 prdsbas 14178 prdsplusgfval 14186 prdsmulrfval 14188 pwsplusgval 14210 pwsmulrval 14211 znval 14973 znle 14974 znbaslemnn 14976 znbas 14981 znzrhval 14984 znzrhfo 14985 znleval 14990 iscnp4 15321 cnpnei 15322 uhgrspansubgrlem 16529 wlkvtxiedg 16598 wlkvtxiedgg 16599 wlk1walkdom 16612 wlklenvclwlk 16626 trlsegvdeglem3 16715 trlsegvdeglem5 16717 eupth2lem3fi 16729 depindlem1 16759 |
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