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| Description: Equality theorem for function predicate with domain. |
| Ref | Expression |
|---|---|
| fneq1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funeq 3535 |
. . 3
| |
| 2 | dmeq 3311 |
. . . 4
| |
| 3 | 2 | eqeq1d 1483 |
. . 3
|
| 4 | 1, 3 | anbi12d 628 |
. 2
|
| 5 | df-fn 3193 |
. 2
| |
| 6 | df-fn 3193 |
. 2
| |
| 7 | 4, 5, 6 | 3bitr4g 555 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fn0 3605 fnopabg 3615 feq1 3620 foeq1 3668 f1oun 3706 f1o00 3714 f1osn 3719 fnopabfv 3758 tfrlem3 3913 tfrlem10 3920 tfrlem12 3922 abianfp 3962 curry1 4098 mapval2 4335 elixp2 4349 en2d 4400 pw2en 4446 mapxpen 4495 unblem4 4543 inf3lem6 4618 r1fnon 4650 aceq3lem 4732 aceq4 4734 alephfnon 4862 alephfplem4 4899 alephfp 4900 om2uzran 6300 om2uzf1o 6301 shftfn 6343 seqzfn 6539 seq0fn 6546 dfseq0 6563 neif 7715 grpinvf 8079 ghgrpilem4 8136 0vfval 8225 |
| 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-dm 3188 df-fun 3192 df-fn 3193 |