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| Mirrors > Home > MPE Home > Th. List > iuneq2i | Structured version Visualization version GIF version | ||
| Description: Equality inference for indexed union. (Contributed by NM, 22-Oct-2003.) |
| Ref | Expression |
|---|---|
| iuneq2i.1 | ⊢ (𝑥 ∈ 𝐴 → 𝐵 = 𝐶) |
| Ref | Expression |
|---|---|
| iuneq2i | ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iuneq2 4976 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 = 𝐶 → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶) | |
| 2 | iuneq2i.1 | . 2 ⊢ (𝑥 ∈ 𝐴 → 𝐵 = 𝐶) | |
| 3 | 1, 2 | mprg 3086 | 1 ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ∪ ciun 4956 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-v 3456 df-ss 3901 df-iun 4958 |
| This theorem is used by: dfiunv2 4997 iunrab 5016 iunin1 5035 2iunin 5041 resiun1 6006 resiun2 6007 dfimafn2 6979 dfmpt 7179 funiunfv 7283 fpar 8164 onovuni 8388 uniqs 8832 marypha2lem2 9465 alephlim 10185 cfsmolem 10387 ituniiun 10539 indval2 12365 imasdsval2 17738 lpival 21699 pzriprnglem10 21851 pzriprnglem11 21852 cmpsublem 23772 txbasval 23980 uniioombllem2 25959 uniioombllem4 25962 volsup2 25981 itg1addlem5 26076 itg1climres 26090 sigaclfu2 34864 measvuni 34958 fmla 36354 ttciun 37517 rabiun 38789 mblfinlem2 38844 voliunnfl 38850 cnambfre 38854 trclrelexplem 44972 cotrclrcl 45003 dfcoll2 45497 hoicvr 47831 hoidmv1le 47877 hoidmvle 47883 hspmbllem2 47910 smflimlem3 48056 smflimlem4 48057 smflim 48060 dfaimafn2 48509 xpiun 49529 |
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