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| Description: Equality theorem for function predicate. |
| Ref | Expression |
|---|---|
| funeq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funss 3520 |
. . . 4
| |
| 2 | funss 3520 |
. . . 4
| |
| 3 | 1, 2 | anim12i 333 |
. . 3
|
| 4 | 3 | ancoms 436 |
. 2
|
| 5 | eqss 2067 |
. 2
| |
| 6 | bi 513 |
. 2
| |
| 7 | 4, 5, 6 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funopg 3533 fununi 3549 funcnvuni 3550 cnvresid 3555 fneq1 3568 f1eq1 3645 f1cnv 3651 f1co 3652 f10 3698 f1oi 3702 tfrlem10 3905 tz7.44lem1 3912 tz7.48-2 3942 abianfp 3947 funoprabg 3995 th3qcor 4300 elpm 4320 ssdomg 4389 sbthlem7 4433 sbthlem8 4434 tz9.12lem2 4632 tz9.12lem3 4633 zorn2lem4 4763 axaddopr 5237 axmulopr 5238 idcn 7705 vsfval 8194 ajfuni 8451 ajfun 8452 dfrelog 8678 funadj 9730 funcnvadj 9734 cmpfun 10363 isalg 10497 algi 10504 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-br 2610 df-opab 2657 df-id 2824 df-rel 3175 df-cnv 3176 df-co 3177 df-fun 3182 |