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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 3753 | . 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 1332 ∪ cuni 3744 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-rex 2423 df-uni 3745 |
This theorem is referenced by: uniprg 3759 unisng 3761 unisn3 4374 onsucuni2 4487 opswapg 5033 elxp4 5034 elxp5 5035 iotaeq 5104 iotabi 5105 uniabio 5106 funfvdm 5492 funfvdm2 5493 fvun1 5495 fniunfv 5671 funiunfvdm 5672 1stvalg 6048 2ndvalg 6049 fo1st 6063 fo2nd 6064 f1stres 6065 f2ndres 6066 2nd1st 6086 cnvf1olem 6129 brtpos2 6156 dftpos4 6168 tpostpos 6169 recseq 6211 tfrexlem 6239 ixpsnf1o 6638 xpcomco 6728 xpassen 6732 xpdom2 6733 supeq1 6881 supeq2 6884 supeq3 6885 supeq123d 6886 en2other2 7069 dfinfre 8738 hashinfom 10556 hashennn 10558 fsumcnv 11238 isbasisg 12250 basis1 12253 baspartn 12256 tgval 12257 eltg 12260 ntrfval 12308 ntrval 12318 tgrest 12377 restuni2 12385 lmfval 12400 cnfval 12402 cnpfval 12403 txtopon 12470 txswaphmeolem 12528 peano4nninf 13375 |
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