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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 3300 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dmsnop 3317 dmxpid 3322 rneq 3328 elxp4 3439 dmxpss 3459 1stval 4065 fo1st 4075 f1stres 4077 xpassen 4421 xpdom2 4422 xpmapenlem2 4477 xpmapenlem4 4479 xpmapenlem5 4480 metssba 7748 metreslem 7762 blfval 7775 opnfval 7797 cncfmet 7844 lmfval 7863 caufval 7864 iscms 7881 bcth 7966 grprndm 7988 vcoprne 8136 ipfval 8286 hmoval 8401 ishoma 10559 ishomd 10562 ismona 10579 isfuna 10592 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-12 965 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-clab 1457 df-cleq 1462 df-clel 1465 df-v 1803 df-un 2040 df-in 2041 df-ss 2043 df-sn 2402 df-pr 2403 df-op 2406 df-br 2610 df-dm 3178 |