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| Description: Equality theorem for function predicate. |
| Ref | Expression |
|---|---|
| funeq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funss 3531 |
. . . 4
| |
| 2 | funss 3531 |
. . . 4
| |
| 3 | 1, 2 | anim12i 333 |
. . 3
|
| 4 | 3 | ancoms 436 |
. 2
|
| 5 | eqss 2075 |
. 2
| |
| 6 | bi 514 |
. 2
| |
| 7 | 4, 5, 6 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funopg 3544 fununi 3560 funcnvuni 3561 cnvresid 3566 fneq1 3579 f1eq1 3657 f1cnv 3663 f1co 3664 f10 3710 f1oi 3714 tfrlem10 3917 tz7.44lem1 3924 tz7.48-2 3954 abianfp 3959 funoprabg 4007 th3qcor 4313 elpm 4333 ssdomg 4402 sbthlem7 4446 sbthlem8 4447 tz9.12lem2 4647 tz9.12lem3 4648 zorn2lem4 4778 axaddopr 5252 axmulopr 5253 idcn 7745 vsfval 8239 ajfuni 8504 ajfun 8505 dfrelog 8740 funadj 9804 funcnvadj 9808 cmpfun 10456 isalg 10604 algi 10611 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-10 965 ax-11 966 ax-12 967 ax-13 968 ax-14 969 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2700 ax-pow 2739 ax-pr 2776 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 980 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1586 df-v 1810 df-dif 2047 df-un 2048 df-in 2049 df-ss 2051 df-nul 2279 df-pw 2400 df-sn 2410 df-pr 2411 df-op 2414 df-br 2617 df-opab 2664 df-id 2832 df-rel 3182 df-cnv 3183 df-co 3184 df-fun 3189 |