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| Description: Equality theorem for functions. |
| Ref | Expression |
|---|---|
| feq1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fneq1 3582 |
. . 3
| |
| 2 | rneq 3339 |
. . . 4
| |
| 3 | 2 | sseq1d 2088 |
. . 3
|
| 4 | 1, 3 | anbi12d 628 |
. 2
|
| 5 | df-f 3194 |
. 2
| |
| 6 | df-f 3194 |
. 2
| |
| 7 | 4, 5, 6 | 3bitr4g 555 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: feq1d 3624 elimf 3626 f00 3657 fconstg 3659 f1eq1 3660 fopab2 3823 fconst2g 3845 fconstfv 3849 elmapg 4333 map0 4344 pw2en 4446 ac6lem 4754 ser1ft 6328 climfnn 7092 caucvg3t 7168 cvgcmp3cetlem1 7188 cvgcmp3cetlem2 7189 elcncf 7265 acdc3lem 7486 acdc3 7487 acdc2lem2 7489 acdc2 7490 acdc5lem2 7492 acdc5 7493 acdclem 7494 acdc 7495 ruclem13 7522 ruclem17 7526 ismet 7798 ismsg 7800 msflem 7803 blf 7844 cnmet 7904 lmfex 7959 metelcls 7965 metcn4i 7972 iscms2lem5 7993 isgrp 8041 issubgi 8122 isring 8141 ringi 8142 vci 8167 isvclem 8196 isnvlem 8229 nvi 8233 islno 8414 ajmoi 8519 hcau 9051 hlim 9056 hlim2 9060 chlim 9104 chcompl 9115 ho0f 9677 adjmo 9758 elcnopt 9783 ellnopt 9784 elhmopt 9800 elcnfnt 9809 ellnfnt 9810 adjvalt 9814 adjt 9857 adjeqt 9859 cnlnssadj 10013 pjinvar 10119 stelt 10141 hstelt 10142 elghomlem2 10383 ismgra 10642 isalg 10653 algi 10660 isfunb 10755 |
| 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-rn 3189 df-fun 3192 df-fn 3193 df-f 3194 |