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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 4530 | . 2 ⊢ (𝐴 ∈ 𝑉 → ∪ 𝐴 ∈ V) | |
| 2 | uniexg 4530 | . 2 ⊢ (∪ 𝐴 ∈ V → ∪ ∪ 𝐴 ∈ V) | |
| 3 | ssun2 3368 | . . . 4 ⊢ ran 𝐴 ⊆ (dom 𝐴 ∪ ran 𝐴) | |
| 4 | dmrnssfld 4987 | . . . 4 ⊢ (dom 𝐴 ∪ ran 𝐴) ⊆ ∪ ∪ 𝐴 | |
| 5 | 3, 4 | sstri 3233 | . . 3 ⊢ ran 𝐴 ⊆ ∪ ∪ 𝐴 |
| 6 | ssexg 4223 | . . 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 3888 dom cdm 4719 ran crn 4720 |
| 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 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 |
| 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 3889 df-br 4084 df-opab 4146 df-cnv 4727 df-dm 4729 df-rn 4730 |
| This theorem is referenced by: rnex 4992 imaexg 5082 xpexr2m 5170 elxp4 5216 elxp5 5217 cnvexg 5266 coexg 5273 fvexg 5648 cofunexg 6260 funrnex 6265 abrexexg 6269 2ndvalg 6295 tposexg 6410 iunon 6436 fopwdom 7005 djuexb 7222 shftfvalg 11344 ovshftex 11345 restval 13293 ptex 13312 imasex 13353 txvalex 14943 txval 14944 blbas 15122 xmettxlem 15198 xmettx 15199 edgvalg 15875 edgopval 15877 edgstruct 15879 usgrausgrien 15982 ausgrumgrien 15983 ausgrusgrien 15984 |
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