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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 3925 | . 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 1398 ∪ cuni 3916 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rex 2528 df-uni 3917 |
| This theorem is referenced by: uniprg 3931 unisng 3933 unisn3 4568 onsucuni2 4688 opswapg 5251 elxp4 5252 elxp5 5253 iotaeq 5323 iotabi 5324 uniabio 5325 funfvdm 5742 funfvdm2 5743 fvun1 5745 fniunfv 5937 funiunfvdm 5938 1stvalg 6338 2ndvalg 6339 fo1st 6353 fo2nd 6354 f1stres 6355 f2ndres 6356 2nd1st 6376 cnvf1olem 6422 brtpos2 6484 dftpos4 6496 tpostpos 6497 recseq 6539 tfrexlem 6567 ixpsnf1o 6973 xpcomco 7079 xpassen 7083 xpdom2 7084 supeq1 7279 supeq2 7282 supeq3 7283 supeq123d 7284 en2other2 7501 dfinfre 9232 hashinfom 11145 hashennn 11147 fsumcnv 12127 fprodcnv 12315 tgval 13492 ptex 13494 lssuni 14528 lspuni0 14589 lss0v 14595 zrhval 14782 zrhvalg 14783 zrhval2 14784 zrhpropd 14791 isbasisg 14926 basis1 14929 baspartn 14932 eltg 14934 ntrfval 14982 ntrval 14992 tgrest 15051 restuni2 15059 lmfval 15075 cnfval 15076 cnpfval 15077 txtopon 15144 txswaphmeolem 15202 peano4nninf 16801 |
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