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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 4968 | . 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 4948 |
| 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 3444 df-ss 3920 df-iun 4950 |
| This theorem is referenced by: dfiunv2 4991 iunrab 5010 iunin1 5029 2iunin 5033 resiun1 5966 resiun2 5967 dfimafn2 6905 dfmpt 7099 funiunfv 7204 fpar 8068 onovuni 8284 uniqs 8722 marypha2lem2 9351 alephlim 9989 cfsmolem 10192 ituniiun 10344 imasdsval2 17449 lpival 21291 pzriprnglem10 21457 pzriprnglem11 21458 cmpsublem 23355 txbasval 23562 uniioombllem2 25552 uniioombllem4 25555 volsup2 25574 itg1addlem5 25669 itg1climres 25683 indval2 32944 sigaclfu2 34299 measvuni 34392 fmla 35597 rabiun 37844 mblfinlem2 37909 voliunnfl 37915 cnambfre 37919 trclrelexplem 44067 cotrclrcl 44098 dfcoll2 44608 hoicvr 46906 hoidmv1le 46952 hoidmvle 46958 hspmbllem2 46985 smflimlem3 47131 smflimlem4 47132 smflim 47135 dfaimafn2 47526 xpiun 48518 |
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