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| Mirrors > Home > ILE Home > Th. List > unieqd | GIF version | ||
| Description: Deduction of equality of two class unions. (Contributed by NM, 21-Apr-1995.) |
| Ref | Expression |
|---|---|
| unieqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| unieqd | ⊢ (𝜑 → ∪ 𝐴 = ∪ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | unieqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | unieq 3928 | . 2 ⊢ (𝐴 = 𝐵 → ∪ 𝐴 = ∪ 𝐵) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → ∪ 𝐴 = ∪ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∪ cuni 3919 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rex 2528 df-uni 3920 |
| This theorem is referenced by: uniprg 3934 unisng 3936 unisn3 4571 onsucuni2 4691 opswapg 5254 elxp4 5255 elxp5 5256 iotaeq 5326 iotabi 5327 uniabio 5328 funfvdm 5745 funfvdm2 5746 fvun1 5748 fniunfv 5941 funiunfvdm 5942 1stvalg 6349 2ndvalg 6350 fo1st 6364 fo2nd 6365 f1stres 6366 f2ndres 6367 2nd1st 6387 cnvf1olem 6433 brtpos2 6495 dftpos4 6507 tpostpos 6508 recseq 6550 tfrexlem 6578 ixpsnf1o 6984 xpcomco 7090 xpassen 7094 xpdom2 7095 supeq1 7290 supeq2 7293 supeq3 7294 supeq123d 7295 en2other2 7512 dfinfre 9247 hashinfom 11166 hashennn 11168 fsumcnv 12148 fprodcnv 12336 tgval 13559 ptex 13561 lssuni 14637 lspuni0 14698 lss0v 14704 zrhval 14891 zrhvalg 14892 zrhval2 14893 zrhpropd 14900 isbasisg 15035 basis1 15038 baspartn 15041 eltg 15043 ntrfval 15091 ntrval 15101 tgrest 15160 restuni2 15168 lmfval 15184 cnfval 15185 cnpfval 15186 txtopon 15253 txswaphmeolem 15311 peano4nninf 16910 |
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