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| Description: Equality theorem for function predicate. |
| Ref | Expression |
|---|---|
| funeq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funss 2682 |
. . . 4
| |
| 2 | funss 2682 |
. . . 4
| |
| 3 | 1, 2 | anim12i 268 |
. . 3
|
| 4 | 3 | ancoms 334 |
. 2
|
| 5 | eqss 1516 |
. 2
| |
| 6 | bi 396 |
. 2
| |
| 7 | 4, 5, 6 | 3imtr4 192 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fununi 2705 funcnvuni 2706 fneq1 2718 f1eq1 2776 f1cnv 2782 f1co 2783 f1oco 2816 f10 2822 f1oi 2825 tfrlem10 2958 tz7.44lem1 2965 tz7.48-2 2995 abianfp 3000 funoprab 3037 th3qcor 3252 ssdomg 3311 sbthlem7 3355 sbthlem8 3356 tz9.12lem2 3504 tz9.12lem3 3505 zornlem4 3606 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-br 2063 df-opab 2098 df-id 2125 df-rel 2425 df-cnv 2426 df-co 2427 df-fun 2432 |