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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 5610 |
. . 3
| |
| 2 | f1f1orn 5653 |
. . 3
| |
| 3 | 1, 2 | syl 14 |
. 2
|
| 4 | df-ima 4789 |
. . 3
| |
| 5 | f1oeq3 5632 |
. . 3
| |
| 6 | 4, 5 | ax-mp 5 |
. 2
|
| 7 | 3, 6 | sylibr 134 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-br 4132 df-opab 4194 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 |
| This theorem is used by: f1imacnv 5659 f1oresrab 5876 isores3 6024 isoini2 6028 rinvf1o 6038 f1imaeng 7083 f1imaen2g 7084 preimaf1ofi 7273 endjusym 7442 dju1p1e2 7555 fisumss 12184 fprodssdc 12382 ballotfilemfrc 13328 ssnnctlemct 13395 eqgen 14089 ushgredgedg 16672 ushgredgedgloop 16674 trlreslem 16835 domomsubct 17236 |
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