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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 2729 | . . 3 ⊢ ∪ 𝐴 = ∪ 𝐴 | |
| 2 | fvbigcup.1 | . . . . 5 ⊢ 𝐴 ∈ V | |
| 3 | 2 | uniex 7717 | . . . 4 ⊢ ∪ 𝐴 ∈ V |
| 4 | 3 | brbigcup 35886 | . . 3 ⊢ (𝐴 Bigcup ∪ 𝐴 ↔ ∪ 𝐴 = ∪ 𝐴) |
| 5 | 1, 4 | mpbir 231 | . 2 ⊢ 𝐴 Bigcup ∪ 𝐴 |
| 6 | fnbigcup 35889 | . . 3 ⊢ Bigcup Fn V | |
| 7 | fnbrfvb 6911 | . . 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 1540 ∈ wcel 2109 Vcvv 3447 ∪ cuni 4871 class class class wbr 5107 Fn wfn 6506 ‘cfv 6511 Bigcup cbigcup 35822 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-symdif 4216 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-br 5108 df-opab 5170 df-mpt 5189 df-id 5533 df-eprel 5538 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-fo 6517 df-fv 6519 df-1st 7968 df-2nd 7969 df-txp 35842 df-bigcup 35846 |
| This theorem is referenced by: (None) |
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