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| Description: Equality deduction for domain. |
| Ref | Expression |
|---|---|
| dmeqd.1 |
|
| Ref | Expression |
|---|---|
| dmeqd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmeqd.1 |
. 2
| |
| 2 | dmeq 3311 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dmsnop 3328 dmxpid 3333 rneq 3339 elxp4 3453 dmxpss 3473 1stval 4081 fo1st 4091 f1stres 4093 xpassen 4441 xpdom2 4442 xpmapenlem2 4497 xpmapenlem4 4499 xpmapenlem5 4500 metssba 7809 metreslem 7822 blfval 7835 opnfval 7857 cncfmet 7905 lmfval 7925 caufval 7926 iscms 7946 bcth 8032 grprndm 8054 vcoprne 8198 ipfval 8352 hmoval 8470 ishoma 10715 ishomd 10718 ismona 10737 isepia 10747 isfuna 10754 |
| 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-12 968 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 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-v 1812 df-un 2050 df-in 2051 df-ss 2053 df-sn 2412 df-pr 2413 df-op 2416 df-br 2620 df-dm 3188 |