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Mirrors > Home > ILE Home > Th. List > dmeqd | GIF version |
Description: Equality deduction for domain. (Contributed by NM, 4-Mar-2004.) |
Ref | Expression |
---|---|
dmeqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
Ref | Expression |
---|---|
dmeqd | ⊢ (𝜑 → dom 𝐴 = dom 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dmeqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
2 | dmeq 4747 | . 2 ⊢ (𝐴 = 𝐵 → dom 𝐴 = dom 𝐵) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → dom 𝐴 = dom 𝐵) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1332 dom cdm 4547 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-sn 3538 df-pr 3539 df-op 3541 df-br 3938 df-dm 4557 |
This theorem is referenced by: rneq 4774 dmsnsnsng 5024 elxp4 5034 fndmin 5535 1stvalg 6048 fo1st 6063 f1stres 6065 errn 6459 xpassen 6732 xpdom2 6733 frecuzrdgtclt 10225 shftdm 10626 ennnfonelemg 11952 ennnfonelem1 11956 ennnfonelemhdmp1 11958 ennnfonelemkh 11961 ennnfonelemhf1o 11962 ennnfonelemex 11963 ennnfonelemhom 11964 isstruct2im 12008 isstruct2r 12009 setsvalg 12028 cnprcl2k 12414 psmetdmdm 12532 xmetdmdm 12564 blfvalps 12593 limccl 12836 ellimc3apf 12837 dvfvalap 12858 dvcj 12881 dvexp 12883 dvmptclx 12888 dvmptaddx 12889 dvmptmulx 12890 |
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