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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 3907 | . 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 3898 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-rex 2517 df-uni 3899 |
| This theorem is referenced by: uniprg 3913 unisng 3915 unisn3 4548 onsucuni2 4668 opswapg 5230 elxp4 5231 elxp5 5232 iotaeq 5302 iotabi 5303 uniabio 5304 funfvdm 5718 funfvdm2 5719 fvun1 5721 fniunfv 5913 funiunfvdm 5914 1stvalg 6314 2ndvalg 6315 fo1st 6329 fo2nd 6330 f1stres 6331 f2ndres 6332 2nd1st 6352 cnvf1olem 6398 brtpos2 6460 dftpos4 6472 tpostpos 6473 recseq 6515 tfrexlem 6543 ixpsnf1o 6948 xpcomco 7053 xpassen 7057 xpdom2 7058 supeq1 7245 supeq2 7248 supeq3 7249 supeq123d 7250 en2other2 7467 dfinfre 9195 hashinfom 11103 hashennn 11105 fsumcnv 12078 fprodcnv 12266 tgval 13425 ptex 13427 lssuni 14459 lspuni0 14520 lss0v 14526 zrhval 14713 zrhvalg 14714 zrhval2 14715 zrhpropd 14722 isbasisg 14855 basis1 14858 baspartn 14861 eltg 14863 ntrfval 14911 ntrval 14921 tgrest 14980 restuni2 14988 lmfval 15004 cnfval 15005 cnpfval 15006 txtopon 15073 txswaphmeolem 15131 peano4nninf 16732 |
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