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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 2737 | . . 3 ⊢ ∪ 𝐴 = ∪ 𝐴 | |
| 2 | fvbigcup.1 | . . . . 5 ⊢ 𝐴 ∈ V | |
| 3 | 2 | uniex 7689 | . . . 4 ⊢ ∪ 𝐴 ∈ V |
| 4 | 3 | brbigcup 36097 | . . 3 ⊢ (𝐴 Bigcup ∪ 𝐴 ↔ ∪ 𝐴 = ∪ 𝐴) |
| 5 | 1, 4 | mpbir 231 | . 2 ⊢ 𝐴 Bigcup ∪ 𝐴 |
| 6 | fnbigcup 36100 | . . 3 ⊢ Bigcup Fn V | |
| 7 | fnbrfvb 6885 | . . 3 ⊢ (( Bigcup Fn V ∧ 𝐴 ∈ V) → (( Bigcup ‘𝐴) = ∪ 𝐴 ↔ 𝐴 Bigcup ∪ 𝐴)) | |
| 8 | 6, 2, 7 | mp2an 693 | . 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 1542 ∈ wcel 2114 Vcvv 3430 ∪ cuni 4851 class class class wbr 5086 Fn wfn 6488 ‘cfv 6493 Bigcup cbigcup 36033 |
| 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-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-symdif 4194 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5520 df-eprel 5525 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-fo 6499 df-fv 6501 df-1st 7936 df-2nd 7937 df-txp 36053 df-bigcup 36057 |
| This theorem is referenced by: (None) |
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