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| 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. |
| Ref | Expression |
|---|---|
| rnexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uniexg 1948 |
. 2
| |
| 2 | uniexg 1948 |
. 2
| |
| 3 | dfrn3 2524 |
. . . 4
| |
| 4 | opeluu 1953 |
. . . . . . . 8
| |
| 5 | 4 | pm3.27d 262 |
. . . . . . 7
|
| 6 | 5 | 19.23aiv 952 |
. . . . . 6
|
| 7 | 6 | ss2abi 1552 |
. . . . 5
|
| 8 | abid2 1186 |
. . . . 5
| |
| 9 | 7, 8 | sseqtr 1532 |
. . . 4
|
| 10 | 3, 9 | eqsstr 1530 |
. . 3
|
| 11 | ssexg 1702 |
. . 3
| |
| 12 | 10, 11 | mpi 44 |
. 2
|
| 13 | 1, 2, 12 | 3syl 21 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: imaexg 2612 elxp4 2640 elxp5 2641 cnvexg 2669 coexg 2671 funrnex 2743 ffoss 2820 fvclex 2908 tz7.44lem1 2965 2ndval 3090 fo2nd 3095 xpmapenlem2 3392 xpmapenlem4 3394 aceq3lem 3555 aceq5 3563 ac6lem 3575 fodom 3613 infxpidmlem8 4940 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-cnv 2426 df-dm 2428 df-rn 2429 |