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Mirrors > Home > ILE Home > Th. List > dfima2 | Unicode version |
Description: Alternate definition of image. Compare definition (d) of [Enderton] p. 44. (Contributed by NM, 19-Apr-2004.) (Proof shortened by Andrew Salmon, 27-Aug-2011.) |
Ref | Expression |
---|---|
dfima2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-ima 4358 | . 2 | |
2 | dfrn2 4523 | . 2 | |
3 | vex 2560 | . . . . . . 7 | |
4 | 3 | brres 4618 | . . . . . 6 |
5 | ancom 253 | . . . . . 6 | |
6 | 4, 5 | bitri 173 | . . . . 5 |
7 | 6 | exbii 1496 | . . . 4 |
8 | df-rex 2312 | . . . 4 | |
9 | 7, 8 | bitr4i 176 | . . 3 |
10 | 9 | abbii 2153 | . 2 |
11 | 1, 2, 10 | 3eqtri 2064 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 97 wceq 1243 wex 1381 wcel 1393 cab 2026 wrex 2307 class class class wbr 3764 crn 4346 cres 4347 cima 4348 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-br 3765 df-opab 3819 df-xp 4351 df-cnv 4353 df-dm 4355 df-rn 4356 df-res 4357 df-ima 4358 |
This theorem is referenced by: dfima3 4671 elimag 4672 imasng 4690 imadiflem 4978 imadif 4979 imainlem 4980 imain 4981 funimaexglem 4982 dfimafn 5222 isoini 5457 |
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