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| Mirrors > Home > ILE Home > Th. List > rnexg | GIF version | ||
| Description: The range of a set is a set. Corollary 6.8(3) of [TakeutiZaring] p. 26. Similar to Lemma 3D of [Enderton] p. 41. (Contributed by NM, 31-Mar-1995.) |
| Ref | Expression |
|---|---|
| rnexg | ⊢ (𝐴 ∈ 𝑉 → ran 𝐴 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uniexg 4529 | . 2 ⊢ (𝐴 ∈ 𝑉 → ∪ 𝐴 ∈ V) | |
| 2 | uniexg 4529 | . 2 ⊢ (∪ 𝐴 ∈ V → ∪ ∪ 𝐴 ∈ V) | |
| 3 | ssun2 3368 | . . . 4 ⊢ ran 𝐴 ⊆ (dom 𝐴 ∪ ran 𝐴) | |
| 4 | dmrnssfld 4986 | . . . 4 ⊢ (dom 𝐴 ∪ ran 𝐴) ⊆ ∪ ∪ 𝐴 | |
| 5 | 3, 4 | sstri 3233 | . . 3 ⊢ ran 𝐴 ⊆ ∪ ∪ 𝐴 |
| 6 | ssexg 4222 | . . 3 ⊢ ((ran 𝐴 ⊆ ∪ ∪ 𝐴 ∧ ∪ ∪ 𝐴 ∈ V) → ran 𝐴 ∈ V) | |
| 7 | 5, 6 | mpan 424 | . 2 ⊢ (∪ ∪ 𝐴 ∈ V → ran 𝐴 ∈ V) |
| 8 | 1, 2, 7 | 3syl 17 | 1 ⊢ (𝐴 ∈ 𝑉 → ran 𝐴 ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 Vcvv 2799 ∪ cun 3195 ⊆ wss 3197 ∪ cuni 3887 dom cdm 4718 ran crn 4719 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4201 ax-pow 4257 ax-pr 4292 ax-un 4523 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-br 4083 df-opab 4145 df-cnv 4726 df-dm 4728 df-rn 4729 |
| This theorem is referenced by: rnex 4991 imaexg 5081 xpexr2m 5169 elxp4 5215 elxp5 5216 cnvexg 5265 coexg 5272 fvexg 5645 cofunexg 6252 funrnex 6257 abrexexg 6261 2ndvalg 6287 tposexg 6402 iunon 6428 fopwdom 6993 djuexb 7207 shftfvalg 11324 ovshftex 11325 restval 13273 ptex 13292 imasex 13333 txvalex 14922 txval 14923 blbas 15101 xmettxlem 15177 xmettx 15178 edgvalg 15854 edgopval 15856 edgstruct 15858 usgrausgrien 15961 ausgrumgrien 15962 ausgrusgrien 15963 |
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