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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 4547 | . 2 | |
2 | dfrn2 4722 | . 2 | |
3 | vex 2684 | . . . . . . 7 | |
4 | 3 | brres 4820 | . . . . . 6 |
5 | ancom 264 | . . . . . 6 | |
6 | 4, 5 | bitri 183 | . . . . 5 |
7 | 6 | exbii 1584 | . . . 4 |
8 | df-rex 2420 | . . . 4 | |
9 | 7, 8 | bitr4i 186 | . . 3 |
10 | 9 | abbii 2253 | . 2 |
11 | 1, 2, 10 | 3eqtri 2162 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wceq 1331 wex 1468 wcel 1480 cab 2123 wrex 2415 class class class wbr 3924 crn 4535 cres 4536 cima 4537 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-br 3925 df-opab 3985 df-xp 4540 df-cnv 4542 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 |
This theorem is referenced by: dfima3 4879 elimag 4880 imasng 4899 imadiflem 5197 imadif 5198 imainlem 5199 imain 5200 funimaexglem 5201 dfimafn 5463 isoini 5712 |
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