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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 3897 | . 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 3888 |
| 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 3889 |
| This theorem is referenced by: uniprg 3903 unisng 3905 unisn3 4536 onsucuni2 4656 opswapg 5215 elxp4 5216 elxp5 5217 iotaeq 5287 iotabi 5288 uniabio 5289 funfvdm 5699 funfvdm2 5700 fvun1 5702 fniunfv 5892 funiunfvdm 5893 1stvalg 6294 2ndvalg 6295 fo1st 6309 fo2nd 6310 f1stres 6311 f2ndres 6312 2nd1st 6332 cnvf1olem 6376 brtpos2 6403 dftpos4 6415 tpostpos 6416 recseq 6458 tfrexlem 6486 ixpsnf1o 6891 xpcomco 6993 xpassen 6997 xpdom2 6998 supeq1 7164 supeq2 7167 supeq3 7168 supeq123d 7169 en2other2 7385 dfinfre 9114 hashinfom 11012 hashennn 11014 fsumcnv 11964 fprodcnv 12152 tgval 13311 ptex 13313 lssuni 14343 lspuni0 14404 lss0v 14410 zrhval 14597 zrhvalg 14598 zrhval2 14599 zrhpropd 14606 isbasisg 14734 basis1 14737 baspartn 14740 eltg 14742 ntrfval 14790 ntrval 14800 tgrest 14859 restuni2 14867 lmfval 14883 cnfval 14884 cnpfval 14885 txtopon 14952 txswaphmeolem 15010 peano4nninf 16460 |
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