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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 3944 | . 2 ⊢ (𝐴 = 𝐵 → ∪ 𝐴 = ∪ 𝐵) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → ∪ 𝐴 = ∪ 𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∪ cuni 3935 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-uni 3936 |
| This theorem is used by: uniprg 3950 unisng 3952 unisn3 4591 onsucuni2 4711 opswapg 5274 elxp4 5275 elxp5 5276 iotaeq 5346 iotabi 5347 uniabio 5348 funfvdm 5766 funfvdm2 5767 fvun1 5769 fniunfv 5968 funiunfvdm 5969 1stvalg 6376 2ndvalg 6377 fo1st 6391 fo2nd 6392 f1stres 6393 f2ndres 6394 2nd1st 6414 cnvf1olem 6460 brtpos2 6522 dftpos4 6534 tpostpos 6535 recseq 6577 tfrexlem 6605 ixpsnf1o 7018 xpcomco 7124 xpassen 7128 xpdom2 7129 supeq1 7327 supeq2 7330 supeq3 7331 supeq123d 7332 en2other2 7549 dfinfre 9289 hashinfom 11233 hashennn 11235 fsumcnv 12223 fprodcnv 12411 tgval 13669 ptex 13671 lssuni 14784 lspuni0 14845 lss0v 14851 zrhval 15036 zrhvalg 15037 zrhval2 15038 zrhpropd 15045 isbasisg 15236 basis1 15239 baspartn 15242 eltg 15244 ntrfval 15292 ntrval 15302 tgrest 15361 restuni2 15369 lmfval 15385 cnfval 15386 cnpfval 15387 txtopon 15454 txswaphmeolem 15512 peano4nninf 17215 |
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