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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fvbigcup | Structured version Visualization version GIF version | ||
| Description: For sets, Bigcup yields union. (Contributed by Scott Fenton, 11-Apr-2012.) |
| Ref | Expression |
|---|---|
| fvbigcup.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| fvbigcup | ⊢ ( Bigcup ‘𝐴) = ∪ 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2736 | . . 3 ⊢ ∪ 𝐴 = ∪ 𝐴 | |
| 2 | fvbigcup.1 | . . . . 5 ⊢ 𝐴 ∈ V | |
| 3 | 2 | uniex 7762 | . . . 4 ⊢ ∪ 𝐴 ∈ V |
| 4 | 3 | brbigcup 35900 | . . 3 ⊢ (𝐴 Bigcup ∪ 𝐴 ↔ ∪ 𝐴 = ∪ 𝐴) |
| 5 | 1, 4 | mpbir 231 | . 2 ⊢ 𝐴 Bigcup ∪ 𝐴 |
| 6 | fnbigcup 35903 | . . 3 ⊢ Bigcup Fn V | |
| 7 | fnbrfvb 6958 | . . 3 ⊢ (( Bigcup Fn V ∧ 𝐴 ∈ V) → (( Bigcup ‘𝐴) = ∪ 𝐴 ↔ 𝐴 Bigcup ∪ 𝐴)) | |
| 8 | 6, 2, 7 | mp2an 692 | . 2 ⊢ (( Bigcup ‘𝐴) = ∪ 𝐴 ↔ 𝐴 Bigcup ∪ 𝐴) |
| 9 | 5, 8 | mpbir 231 | 1 ⊢ ( Bigcup ‘𝐴) = ∪ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 = wceq 1539 ∈ wcel 2107 Vcvv 3479 ∪ cuni 4906 class class class wbr 5142 Fn wfn 6555 ‘cfv 6560 Bigcup cbigcup 35836 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-ral 3061 df-rex 3070 df-rab 3436 df-v 3481 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-symdif 4252 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-br 5143 df-opab 5205 df-mpt 5225 df-id 5577 df-eprel 5583 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-fo 6566 df-fv 6568 df-1st 8015 df-2nd 8016 df-txp 35856 df-bigcup 35860 |
| This theorem is referenced by: (None) |
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