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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 3939 | . 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 1402 ∪ cuni 3930 |
| 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 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 theorem 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 3931 |
| This theorem is referenced by: uniprg 3945 unisng 3947 unisn3 4586 onsucuni2 4706 opswapg 5269 elxp4 5270 elxp5 5271 iotaeq 5341 iotabi 5342 uniabio 5343 funfvdm 5760 funfvdm2 5761 fvun1 5763 fniunfv 5958 funiunfvdm 5959 1stvalg 6366 2ndvalg 6367 fo1st 6381 fo2nd 6382 f1stres 6383 f2ndres 6384 2nd1st 6404 cnvf1olem 6450 brtpos2 6512 dftpos4 6524 tpostpos 6525 recseq 6567 tfrexlem 6595 ixpsnf1o 7008 xpcomco 7114 xpassen 7118 xpdom2 7119 supeq1 7316 supeq2 7319 supeq3 7320 supeq123d 7321 en2other2 7538 dfinfre 9276 hashinfom 11195 hashennn 11197 fsumcnv 12182 fprodcnv 12370 tgval 13593 ptex 13595 lssuni 14672 lspuni0 14733 lss0v 14739 zrhval 14924 zrhvalg 14925 zrhval2 14926 zrhpropd 14933 isbasisg 15068 basis1 15071 baspartn 15074 eltg 15076 ntrfval 15124 ntrval 15134 tgrest 15193 restuni2 15201 lmfval 15217 cnfval 15218 cnpfval 15219 txtopon 15286 txswaphmeolem 15344 peano4nninf 16954 |
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