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| Mirrors > Home > ILE Home > Th. List > f1ores | Unicode version | ||
| Description: The restriction of a one-to-one function maps one-to-one onto the image. (Contributed by NM, 25-Mar-1998.) |
| Ref | Expression |
|---|---|
| f1ores |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ssres 5490 |
. . 3
| |
| 2 | f1f1orn 5533 |
. . 3
| |
| 3 | 1, 2 | syl 14 |
. 2
|
| 4 | df-ima 4688 |
. . 3
| |
| 5 | f1oeq3 5512 |
. . 3
| |
| 6 | 4, 5 | ax-mp 5 |
. 2
|
| 7 | 3, 6 | sylibr 134 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-14 2179 ax-ext 2187 ax-sep 4162 ax-pow 4218 ax-pr 4253 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rex 2490 df-v 2774 df-un 3170 df-in 3172 df-ss 3179 df-pw 3618 df-sn 3639 df-pr 3640 df-op 3642 df-br 4045 df-opab 4106 df-xp 4681 df-rel 4682 df-cnv 4683 df-co 4684 df-dm 4685 df-rn 4686 df-res 4687 df-ima 4688 df-fun 5273 df-fn 5274 df-f 5275 df-f1 5276 df-fo 5277 df-f1o 5278 |
| This theorem is referenced by: f1imacnv 5539 f1oresrab 5745 isores3 5884 isoini2 5888 f1imaeng 6884 f1imaen2g 6885 preimaf1ofi 7053 endjusym 7198 dju1p1e2 7305 fisumss 11703 fprodssdc 11901 ssnnctlemct 12817 eqgen 13563 domomsubct 15938 |
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