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| Description: Equality theorem for function predicate with domain. |
| Ref | Expression |
|---|---|
| fneq1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funeq 3527 |
. . 3
| |
| 2 | dmeq 3306 |
. . . 4
| |
| 3 | 2 | eqeq1d 1480 |
. . 3
|
| 4 | 1, 3 | anbi12d 627 |
. 2
|
| 5 | df-fn 3188 |
. 2
| |
| 6 | df-fn 3188 |
. 2
| |
| 7 | 4, 5, 6 | 3bitr4g 554 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fn0 3597 fnopabg 3607 feq1 3612 foeq1 3659 f1oun 3697 f1o00 3705 f1osn 3710 fnopabfv 3749 tfrlem3 3904 tfrlem10 3911 tfrlem12 3913 abianfp 3953 curry1 4088 mapval2 4325 elixp2 4339 en2d 4387 pw2en 4432 mapxpen 4481 unblem4 4526 inf3lem6 4598 r1fnon 4630 aceq3lem 4712 aceq4 4714 alephfnon 4842 alephfplem4 4879 alephfp 4880 om2uzran 6245 om2uzf1o 6246 shftfn 6288 seqzfn 6479 seq0fn 6486 dfseq0 6503 neif 7665 grpinvf 8029 resgrprnOLD 8046 ghgrpilem4 8088 0vfval 8177 circgrpOLD 8677 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-br 2615 df-opab 2662 df-id 2830 df-rel 3180 df-cnv 3181 df-co 3182 df-dm 3183 df-fun 3187 df-fn 3188 |