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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 3902 | . 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 1397 ∪ cuni 3893 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rex 2516 df-uni 3894 |
| This theorem is referenced by: uniprg 3908 unisng 3910 unisn3 4542 onsucuni2 4662 opswapg 5223 elxp4 5224 elxp5 5225 iotaeq 5295 iotabi 5296 uniabio 5297 funfvdm 5709 funfvdm2 5710 fvun1 5712 fniunfv 5902 funiunfvdm 5903 1stvalg 6304 2ndvalg 6305 fo1st 6319 fo2nd 6320 f1stres 6321 f2ndres 6322 2nd1st 6342 cnvf1olem 6388 brtpos2 6416 dftpos4 6428 tpostpos 6429 recseq 6471 tfrexlem 6499 ixpsnf1o 6904 xpcomco 7009 xpassen 7013 xpdom2 7014 supeq1 7184 supeq2 7187 supeq3 7188 supeq123d 7189 en2other2 7406 dfinfre 9135 hashinfom 11039 hashennn 11041 fsumcnv 11997 fprodcnv 12185 tgval 13344 ptex 13346 lssuni 14376 lspuni0 14437 lss0v 14443 zrhval 14630 zrhvalg 14631 zrhval2 14632 zrhpropd 14639 isbasisg 14767 basis1 14770 baspartn 14773 eltg 14775 ntrfval 14823 ntrval 14833 tgrest 14892 restuni2 14900 lmfval 14916 cnfval 14917 cnpfval 14918 txtopon 14985 txswaphmeolem 15043 peano4nninf 16608 |
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