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| Description: Equality theorem for function predicate. |
| Ref | Expression |
|---|---|
| funeq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funss 3609 |
. . . 4
| |
| 2 | funss 3609 |
. . . 4
| |
| 3 | 1, 2 | anim12i 331 |
. . 3
|
| 4 | 3 | ancoms 438 |
. 2
|
| 5 | eqss 2121 |
. 2
| |
| 6 | dfbi2 516 |
. 2
| |
| 7 | 4, 5, 6 | 3imtr4i 217 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funopg 3622 fununi 3638 funcnvuni 3639 cnvresid 3644 fneq1 3657 f1eq1 3735 f1cnv 3741 f1co 3742 f10 3789 f1oi 3793 tfrlem10 3996 tz7.44lem1 4003 tz7.48-2 4033 abianfp 4038 funoprabg 4087 th3qcor 4403 elpm 4423 ssdomg 4495 sbthlem7 4540 sbthlem8 4541 tz9.12lem2 4746 tz9.12lem3 4747 zorn2lem4 4877 axaddopr 5354 axmulopr 5355 idcn 7886 vsfval 8373 ajfuni 8639 ajfun 8640 dfrelog 8875 funadj 9931 funcnvadj 9935 cmpfun 10585 isalg 10788 algi 10795 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 994 ax-gen 995 ax-8 996 ax-10 998 ax-11 999 ax-12 1000 ax-13 1001 ax-14 1002 ax-17 1003 ax-4 1005 ax-5o 1007 ax-6o 1010 ax-9o 1155 ax-10o 1173 ax-16 1243 ax-11o 1251 ax-ext 1494 ax-sep 2754 ax-pow 2794 ax-pr 2832 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-ex 1013 df-sb 1205 df-eu 1415 df-mo 1416 df-clab 1500 df-cleq 1505 df-clel 1508 df-ne 1624 df-v 1850 df-dif 2093 df-un 2094 df-in 2095 df-ss 2097 df-nul 2325 df-pw 2447 df-sn 2457 df-pr 2458 df-op 2461 df-br 2670 df-opab 2718 df-id 2889 df-rel 3240 df-cnv 3241 df-co 3242 df-fun 3247 |