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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 3900 | . 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 1395 ∪ cuni 3891 |
| 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-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-uni 3892 |
| This theorem is referenced by: uniprg 3906 unisng 3908 unisn3 4540 onsucuni2 4660 opswapg 5221 elxp4 5222 elxp5 5223 iotaeq 5293 iotabi 5294 uniabio 5295 funfvdm 5705 funfvdm2 5706 fvun1 5708 fniunfv 5898 funiunfvdm 5899 1stvalg 6300 2ndvalg 6301 fo1st 6315 fo2nd 6316 f1stres 6317 f2ndres 6318 2nd1st 6338 cnvf1olem 6384 brtpos2 6412 dftpos4 6424 tpostpos 6425 recseq 6467 tfrexlem 6495 ixpsnf1o 6900 xpcomco 7005 xpassen 7009 xpdom2 7010 supeq1 7176 supeq2 7179 supeq3 7180 supeq123d 7181 en2other2 7397 dfinfre 9126 hashinfom 11030 hashennn 11032 fsumcnv 11988 fprodcnv 12176 tgval 13335 ptex 13337 lssuni 14367 lspuni0 14428 lss0v 14434 zrhval 14621 zrhvalg 14622 zrhval2 14623 zrhpropd 14630 isbasisg 14758 basis1 14761 baspartn 14764 eltg 14766 ntrfval 14814 ntrval 14824 tgrest 14883 restuni2 14891 lmfval 14907 cnfval 14908 cnpfval 14909 txtopon 14976 txswaphmeolem 15034 peano4nninf 16544 |
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