| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > uneq1d | GIF version | ||
| Description: Deduction adding union to the right in a class equality. (Contributed by NM, 29-Mar-1998.) |
| Ref | Expression |
|---|---|
| uneq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| uneq1d | ⊢ (𝜑 → (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uneq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | uneq1 3352 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐶)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝐴 ∪ 𝐶) = (𝐵 ∪ 𝐶)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∪ cun 3196 |
| 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-v 2802 df-un 3202 |
| This theorem is referenced by: ifeq1 3606 preq1 3746 tpeq1 3755 tpeq2 3756 resasplitss 5513 fmptpr 5841 funresdfunsnss 5852 rdgisucinc 6546 oasuc 6627 omsuc 6635 funresdfunsndc 6669 fisseneq 7119 sbthlemi5 7151 exmidfodomrlemim 7402 fzpred 10295 fseq1p1m1 10319 nn0split 10361 nnsplit 10362 fzo0sn0fzo1 10456 fzosplitpr 10469 fzosplitprm1 10470 zsupcllemstep 10479 fsum1p 11969 fprod1p 12150 setsvala 13103 setsabsd 13111 setscom 13112 prdsex 13342 prdsval 13346 plyaddlem1 15461 plymullem1 15462 |
| Copyright terms: Public domain | W3C validator |