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Mirrors > Home > MPE Home > Th. List > Mathboxes > brbigcup | Structured version Visualization version GIF version |
Description: Binary relation over Bigcup . (Contributed by Scott Fenton, 11-Apr-2012.) |
Ref | Expression |
---|---|
brbigcup.1 | ⊢ 𝐵 ∈ V |
Ref | Expression |
---|---|
brbigcup | ⊢ (𝐴 Bigcup 𝐵 ↔ ∪ 𝐴 = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | relbigcup 34126 | . . 3 ⊢ Rel Bigcup | |
2 | 1 | brrelex1i 5634 | . 2 ⊢ (𝐴 Bigcup 𝐵 → 𝐴 ∈ V) |
3 | brbigcup.1 | . . . 4 ⊢ 𝐵 ∈ V | |
4 | eleq1 2826 | . . . 4 ⊢ (∪ 𝐴 = 𝐵 → (∪ 𝐴 ∈ V ↔ 𝐵 ∈ V)) | |
5 | 3, 4 | mpbiri 257 | . . 3 ⊢ (∪ 𝐴 = 𝐵 → ∪ 𝐴 ∈ V) |
6 | uniexb 7592 | . . 3 ⊢ (𝐴 ∈ V ↔ ∪ 𝐴 ∈ V) | |
7 | 5, 6 | sylibr 233 | . 2 ⊢ (∪ 𝐴 = 𝐵 → 𝐴 ∈ V) |
8 | breq1 5073 | . . 3 ⊢ (𝑥 = 𝐴 → (𝑥 Bigcup 𝐵 ↔ 𝐴 Bigcup 𝐵)) | |
9 | unieq 4847 | . . . 4 ⊢ (𝑥 = 𝐴 → ∪ 𝑥 = ∪ 𝐴) | |
10 | 9 | eqeq1d 2740 | . . 3 ⊢ (𝑥 = 𝐴 → (∪ 𝑥 = 𝐵 ↔ ∪ 𝐴 = 𝐵)) |
11 | vex 3426 | . . . . 5 ⊢ 𝑥 ∈ V | |
12 | df-bigcup 34087 | . . . . 5 ⊢ Bigcup = ((V × V) ∖ ran ((V ⊗ E ) △ (( E ∘ E ) ⊗ V))) | |
13 | brxp 5627 | . . . . . 6 ⊢ (𝑥(V × V)𝐵 ↔ (𝑥 ∈ V ∧ 𝐵 ∈ V)) | |
14 | 11, 3, 13 | mpbir2an 707 | . . . . 5 ⊢ 𝑥(V × V)𝐵 |
15 | epel 5489 | . . . . . . 7 ⊢ (𝑦 E 𝑧 ↔ 𝑦 ∈ 𝑧) | |
16 | 15 | rexbii 3177 | . . . . . 6 ⊢ (∃𝑧 ∈ 𝑥 𝑦 E 𝑧 ↔ ∃𝑧 ∈ 𝑥 𝑦 ∈ 𝑧) |
17 | vex 3426 | . . . . . . 7 ⊢ 𝑦 ∈ V | |
18 | 17, 11 | coep 33625 | . . . . . 6 ⊢ (𝑦( E ∘ E )𝑥 ↔ ∃𝑧 ∈ 𝑥 𝑦 E 𝑧) |
19 | eluni2 4840 | . . . . . 6 ⊢ (𝑦 ∈ ∪ 𝑥 ↔ ∃𝑧 ∈ 𝑥 𝑦 ∈ 𝑧) | |
20 | 16, 18, 19 | 3bitr4ri 303 | . . . . 5 ⊢ (𝑦 ∈ ∪ 𝑥 ↔ 𝑦( E ∘ E )𝑥) |
21 | 11, 3, 12, 14, 20 | brtxpsd3 34125 | . . . 4 ⊢ (𝑥 Bigcup 𝐵 ↔ 𝐵 = ∪ 𝑥) |
22 | eqcom 2745 | . . . 4 ⊢ (𝐵 = ∪ 𝑥 ↔ ∪ 𝑥 = 𝐵) | |
23 | 21, 22 | bitri 274 | . . 3 ⊢ (𝑥 Bigcup 𝐵 ↔ ∪ 𝑥 = 𝐵) |
24 | 8, 10, 23 | vtoclbg 3497 | . 2 ⊢ (𝐴 ∈ V → (𝐴 Bigcup 𝐵 ↔ ∪ 𝐴 = 𝐵)) |
25 | 2, 7, 24 | pm5.21nii 379 | 1 ⊢ (𝐴 Bigcup 𝐵 ↔ ∪ 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 = wceq 1539 ∈ wcel 2108 ∃wrex 3064 Vcvv 3422 ∪ cuni 4836 class class class wbr 5070 E cep 5485 × cxp 5578 ∘ ccom 5584 Bigcup cbigcup 34063 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-symdif 4173 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-eprel 5486 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-fo 6424 df-fv 6426 df-1st 7804 df-2nd 7805 df-txp 34083 df-bigcup 34087 |
This theorem is referenced by: dfbigcup2 34128 fvbigcup 34131 ellimits 34139 brapply 34167 dfrdg4 34180 |
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