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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 35879 | . . 3 ⊢ Rel Bigcup | |
2 | 1 | brrelex1i 5745 | . 2 ⊢ (𝐴 Bigcup 𝐵 → 𝐴 ∈ V) |
3 | brbigcup.1 | . . . 4 ⊢ 𝐵 ∈ V | |
4 | eleq1 2827 | . . . 4 ⊢ (∪ 𝐴 = 𝐵 → (∪ 𝐴 ∈ V ↔ 𝐵 ∈ V)) | |
5 | 3, 4 | mpbiri 258 | . . 3 ⊢ (∪ 𝐴 = 𝐵 → ∪ 𝐴 ∈ V) |
6 | uniexb 7783 | . . 3 ⊢ (𝐴 ∈ V ↔ ∪ 𝐴 ∈ V) | |
7 | 5, 6 | sylibr 234 | . 2 ⊢ (∪ 𝐴 = 𝐵 → 𝐴 ∈ V) |
8 | breq1 5151 | . . 3 ⊢ (𝑥 = 𝐴 → (𝑥 Bigcup 𝐵 ↔ 𝐴 Bigcup 𝐵)) | |
9 | unieq 4923 | . . . 4 ⊢ (𝑥 = 𝐴 → ∪ 𝑥 = ∪ 𝐴) | |
10 | 9 | eqeq1d 2737 | . . 3 ⊢ (𝑥 = 𝐴 → (∪ 𝑥 = 𝐵 ↔ ∪ 𝐴 = 𝐵)) |
11 | vex 3482 | . . . . 5 ⊢ 𝑥 ∈ V | |
12 | df-bigcup 35840 | . . . . 5 ⊢ Bigcup = ((V × V) ∖ ran ((V ⊗ E ) △ (( E ∘ E ) ⊗ V))) | |
13 | brxp 5738 | . . . . . 6 ⊢ (𝑥(V × V)𝐵 ↔ (𝑥 ∈ V ∧ 𝐵 ∈ V)) | |
14 | 11, 3, 13 | mpbir2an 711 | . . . . 5 ⊢ 𝑥(V × V)𝐵 |
15 | epel 5592 | . . . . . . 7 ⊢ (𝑦 E 𝑧 ↔ 𝑦 ∈ 𝑧) | |
16 | 15 | rexbii 3092 | . . . . . 6 ⊢ (∃𝑧 ∈ 𝑥 𝑦 E 𝑧 ↔ ∃𝑧 ∈ 𝑥 𝑦 ∈ 𝑧) |
17 | vex 3482 | . . . . . . 7 ⊢ 𝑦 ∈ V | |
18 | 17, 11 | coep 35732 | . . . . . 6 ⊢ (𝑦( E ∘ E )𝑥 ↔ ∃𝑧 ∈ 𝑥 𝑦 E 𝑧) |
19 | eluni2 4916 | . . . . . 6 ⊢ (𝑦 ∈ ∪ 𝑥 ↔ ∃𝑧 ∈ 𝑥 𝑦 ∈ 𝑧) | |
20 | 16, 18, 19 | 3bitr4ri 304 | . . . . 5 ⊢ (𝑦 ∈ ∪ 𝑥 ↔ 𝑦( E ∘ E )𝑥) |
21 | 11, 3, 12, 14, 20 | brtxpsd3 35878 | . . . 4 ⊢ (𝑥 Bigcup 𝐵 ↔ 𝐵 = ∪ 𝑥) |
22 | eqcom 2742 | . . . 4 ⊢ (𝐵 = ∪ 𝑥 ↔ ∪ 𝑥 = 𝐵) | |
23 | 21, 22 | bitri 275 | . . 3 ⊢ (𝑥 Bigcup 𝐵 ↔ ∪ 𝑥 = 𝐵) |
24 | 8, 10, 23 | vtoclbg 3557 | . 2 ⊢ (𝐴 ∈ V → (𝐴 Bigcup 𝐵 ↔ ∪ 𝐴 = 𝐵)) |
25 | 2, 7, 24 | pm5.21nii 378 | 1 ⊢ (𝐴 Bigcup 𝐵 ↔ ∪ 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 206 = wceq 1537 ∈ wcel 2106 ∃wrex 3068 Vcvv 3478 ∪ cuni 4912 class class class wbr 5148 E cep 5588 × cxp 5687 ∘ ccom 5693 Bigcup cbigcup 35816 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-ral 3060 df-rex 3069 df-rab 3434 df-v 3480 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-symdif 4259 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5583 df-eprel 5589 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-fo 6569 df-fv 6571 df-1st 8013 df-2nd 8014 df-txp 35836 df-bigcup 35840 |
This theorem is referenced by: dfbigcup2 35881 fvbigcup 35884 ellimits 35892 brapply 35920 dfrdg4 35933 |
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