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| Description: The restriction of a function to a set exists. Compare Proposition 6.17 of [TakeutiZaring] p. 28. |
| Ref | Expression |
|---|---|
| resfunexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmresexg 4236 |
. . . 4
| |
| 2 | 1 | adantl 424 |
. . 3
|
| 3 | funimaexg 4495 |
. . . 4
| |
| 4 | df-ima 4007 |
. . . 4
| |
| 5 | 3, 4 | syl5eqelr 1976 |
. . 3
|
| 6 | 2, 5 | jca 310 |
. 2
|
| 7 | xpexg 4095 |
. 2
| |
| 8 | relres 4242 |
. . . 4
| |
| 9 | relssdmrn 4416 |
. . . 4
| |
| 10 | 8, 9 | ax-mp 7 |
. . 3
|
| 11 | ssexg 3457 |
. . 3
| |
| 12 | 10, 11 | mpan 759 |
. 2
|
| 13 | 6, 7, 12 | 3syl 24 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: cofunexg 4501 fnex 4535 fvresex 4833 tz7.44-2 5137 tz7.44-3 5138 ordtypelem1 5684 ordtypelem6 5689 ordtype 5691 numthlem 5945 zorn2lem1 5950 imadomg 5968 fac1 8187 facp1 8188 sumeq2 8245 prodeq2 14661 seqzp2 14716 valtar 15260 ordtypelem1OLD 15375 ordtypelem6OLD 15380 ordtypeOLD 15382 filnet 15645 addrval 16466 subrval 16467 mulvval 16468 |
| 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-13 1311 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-rep 3428 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 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-rex 2110 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-uni 3178 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-rn 4005 df-res 4006 df-ima 4007 df-fun 4008 |