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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 4970 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 = 𝐶 → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶) | |
| 2 | iuneq2i.1 | . 2 ⊢ (𝑥 ∈ 𝐴 → 𝐵 = 𝐶) | |
| 3 | 1, 2 | mprg 3082 | 1 ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ∪ ciun 4950 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-v 3452 df-ss 3897 df-iun 4952 |
| This theorem is used by: dfiunv2 4991 iunrab 5010 iunin1 5029 2iunin 5035 resiun1 5991 resiun2 5992 dfimafn2 6953 dfmpt 7152 funiunfv 7256 fpar 8134 onovuni 8358 uniqs 8802 marypha2lem2 9435 alephlim 10153 cfsmolem 10355 ituniiun 10507 indval2 12332 imasdsval2 17697 lpival 21657 pzriprnglem10 21805 pzriprnglem11 21806 cmpsublem 23726 txbasval 23934 uniioombllem2 25913 uniioombllem4 25916 volsup2 25935 itg1addlem5 26030 itg1climres 26044 sigaclfu2 34803 measvuni 34897 fmla 36264 ttciun 37426 rabiun 38658 mblfinlem2 38713 voliunnfl 38719 cnambfre 38723 trclrelexplem 44848 cotrclrcl 44879 dfcoll2 45373 hoicvr 47694 hoidmv1le 47740 hoidmvle 47746 hspmbllem2 47773 smflimlem3 47919 smflimlem4 47920 smflim 47923 dfaimafn2 48372 xpiun 49392 |
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