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| Description: Equality theorem for function predicate. |
| Ref | Expression |
|---|---|
| funeq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funss 3534 |
. . . 4
| |
| 2 | funss 3534 |
. . . 4
| |
| 3 | 1, 2 | anim12i 333 |
. . 3
|
| 4 | 3 | ancoms 436 |
. 2
|
| 5 | eqss 2077 |
. 2
| |
| 6 | dfbi2 514 |
. 2
| |
| 7 | 4, 5, 6 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funopg 3547 fununi 3563 funcnvuni 3564 cnvresid 3569 fneq1 3582 f1eq1 3660 f1cnv 3666 f1co 3667 f10 3713 f1oi 3717 tfrlem10 3920 tz7.44lem1 3927 tz7.48-2 3957 abianfp 3962 funoprabg 4010 th3qcor 4316 elpm 4336 ssdomg 4408 sbthlem7 4453 sbthlem8 4454 tz9.12lem2 4660 tz9.12lem3 4661 zorn2lem4 4791 axaddopr 5265 axmulopr 5266 idcn 7766 vsfval 8254 ajfuni 8520 ajfun 8521 dfrelog 8756 funadj 9813 funcnvadj 9817 cmpfun 10467 isalg 10653 algi 10660 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-br 2620 df-opab 2667 df-id 2835 df-rel 3185 df-cnv 3186 df-co 3187 df-fun 3192 |