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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 4954 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 = 𝐶 → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶) | |
| 2 | iuneq2i.1 | . 2 ⊢ (𝑥 ∈ 𝐴 → 𝐵 = 𝐶) | |
| 3 | 1, 2 | mprg 3058 | 1 ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ∪ ciun 4934 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-v 3432 df-ss 3907 df-iun 4936 |
| This theorem is referenced by: dfiunv2 4977 iunrab 4996 iunin1 5015 2iunin 5019 resiun1 5959 resiun2 5960 dfimafn2 6898 dfmpt 7092 funiunfv 7197 fpar 8060 onovuni 8276 uniqs 8714 marypha2lem2 9343 alephlim 9983 cfsmolem 10186 ituniiun 10338 indval2 12158 imasdsval2 17474 lpival 21317 pzriprnglem10 21483 pzriprnglem11 21484 cmpsublem 23377 txbasval 23584 uniioombllem2 25563 uniioombllem4 25566 volsup2 25585 itg1addlem5 25680 itg1climres 25694 sigaclfu2 34284 measvuni 34377 fmla 35582 ttciun 36715 rabiun 37931 mblfinlem2 37996 voliunnfl 38002 cnambfre 38006 trclrelexplem 44159 cotrclrcl 44190 dfcoll2 44700 hoicvr 46997 hoidmv1le 47043 hoidmvle 47049 hspmbllem2 47076 smflimlem3 47222 smflimlem4 47223 smflim 47226 dfaimafn2 47629 xpiun 48649 |
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