| Metamath Proof Explorer |
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Related theorems Unicode version |
| Description: The restriction of a one-to-one function maps one-to-one onto the image. |
| Ref | Expression |
|---|---|
| f1ores |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffun 4565 |
. . . . . 6
| |
| 2 | 1 | adantr 425 |
. . . . 5
|
| 3 | fdm 4567 |
. . . . . . 7
| |
| 4 | 3 | sseq2d 2645 |
. . . . . 6
|
| 5 | 4 | biimpar 461 |
. . . . 5
|
| 6 | fores 4627 |
. . . . 5
| |
| 7 | 2, 5, 6 | syl11anc 524 |
. . . 4
|
| 8 | funres11 4486 |
. . . 4
| |
| 9 | 7, 8 | anim12i 360 |
. . 3
|
| 10 | 9 | an1rs 547 |
. 2
|
| 11 | df-f1 4011 |
. . 3
| |
| 12 | 11 | anbi1i 539 |
. 2
|
| 13 | dff1o3 4641 |
. 2
| |
| 14 | 10, 12, 13 | 3imtr4i 236 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: f1imacnv 4656 f1imaen 5481 ac6sfi 5509 phplem4 5605 php3 5609 ssfi 5630 unifi 5648 fiint 5650 unbenlem 8773 fbssint 10279 adjbd1o 11655 finsschain 15373 compfipin0lem 15435 compfipin0 15436 fcluscomplem 15620 ismtyres 15954 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-br 3339 df-opab 3396 df-id 3586 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-res 4006 df-ima 4007 df-fun 4008 df-fn 4009 df-f 4010 df-f1 4011 df-fo 4012 df-f1o 4013 |