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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 4953 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 = 𝐶 → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶) | |
| 2 | iuneq2i.1 | . 2 ⊢ (𝑥 ∈ 𝐴 → 𝐵 = 𝐶) | |
| 3 | 1, 2 | mprg 3057 | 1 ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ∪ ciun 4933 |
| 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3062 df-v 3431 df-ss 3906 df-iun 4935 |
| This theorem is referenced by: dfiunv2 4976 iunrab 4995 iunin1 5014 2iunin 5018 resiun1 5964 resiun2 5965 dfimafn2 6903 dfmpt 7097 funiunfv 7203 fpar 8066 onovuni 8282 uniqs 8720 marypha2lem2 9349 alephlim 9989 cfsmolem 10192 ituniiun 10344 indval2 12164 imasdsval2 17480 lpival 21322 pzriprnglem10 21470 pzriprnglem11 21471 cmpsublem 23364 txbasval 23571 uniioombllem2 25550 uniioombllem4 25553 volsup2 25572 itg1addlem5 25667 itg1climres 25681 sigaclfu2 34265 measvuni 34358 fmla 35563 ttciun 36696 rabiun 37914 mblfinlem2 37979 voliunnfl 37985 cnambfre 37989 trclrelexplem 44138 cotrclrcl 44169 dfcoll2 44679 hoicvr 46976 hoidmv1le 47022 hoidmvle 47028 hspmbllem2 47055 smflimlem3 47201 smflimlem4 47202 smflim 47205 dfaimafn2 47614 xpiun 48634 |
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