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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 |
|---|---|
| dmex.1 |
|
| Ref | Expression |
|---|---|
| rnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmex.1 |
. 2
| |
| 2 | rnexg 3375 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: elxp4 3469 elxp5 3470 ffoss 3727 fvclex 3872 2ndval 4098 fo2nd 4108 xpmapenlem2 4517 aceq3lem 4749 aceq5 4757 ac6lem 4771 fodom 4815 infxpidmlem8 7592 retopbas 7681 bafval 8248 0vfval 8250 vsfval 8279 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 966 ax-gen 967 ax-8 968 ax-10 970 ax-11 971 ax-12 972 ax-13 973 ax-14 974 ax-17 975 ax-4 977 ax-5o 979 ax-6o 982 ax-9o 1127 ax-10o 1144 ax-16 1214 ax-11o 1222 ax-ext 1464 ax-sep 2718 ax-pow 2758 ax-pr 2795 ax-un 2882 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 985 df-sb 1176 df-eu 1386 df-mo 1387 df-clab 1470 df-cleq 1475 df-clel 1478 df-ne 1594 df-v 1819 df-dif 2060 df-un 2061 df-in 2062 df-ss 2064 df-nul 2292 df-pw 2414 df-sn 2424 df-pr 2425 df-op 2428 df-uni 2518 df-br 2635 df-opab 2682 df-cnv 3202 df-dm 3204 df-rn 3205 |