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| Mirrors > Home > ILE Home > Th. List > dmeqi | GIF version | ||
| Description: Equality inference for domain. (Contributed by NM, 4-Mar-2004.) |
| Ref | Expression |
|---|---|
| dmeqi.1 | ⊢ 𝐴 = 𝐵 |
| Ref | Expression |
|---|---|
| dmeqi | ⊢ dom 𝐴 = dom 𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmeqi.1 | . 2 ⊢ 𝐴 = 𝐵 | |
| 2 | dmeq 4923 | . 2 ⊢ (𝐴 = 𝐵 → dom 𝐴 = dom 𝐵) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ dom 𝐴 = dom 𝐵 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 dom cdm 4719 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-br 4084 df-dm 4729 |
| This theorem is referenced by: dmxpm 4944 dmxpid 4945 dmxpin 4946 rncoss 4995 rncoeq 4998 rnun 5137 rnin 5138 rnxpm 5158 rnxpss 5160 imainrect 5174 dmpropg 5201 dmtpop 5204 rnsnopg 5207 fntpg 5377 fnreseql 5747 dmoprab 6091 reldmmpo 6122 elmpocl 6206 tfrlem8 6470 tfr2a 6473 tfrlemi14d 6485 tfr1onlemres 6501 tfri1dALT 6503 tfrcllemres 6514 xpassen 6997 sbthlemi5 7139 casedm 7264 djudm 7283 ctssdccl 7289 dmaddpi 7523 dmmulpi 7524 dmaddpq 7577 dmmulpq 7578 axaddf 8066 axmulf 8067 ennnfonelemom 12994 ennnfonelemdm 13006 structiedg0val 15856 isuhgrm 15886 isushgrm 15887 isupgren 15910 isumgren 15920 isuspgren 15970 isusgren 15971 ushgredgedg 16039 ushgredgedgloop 16041 vtxdgfval 16047 |
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