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Mirrors > Home > MPE Home > Th. List > ralunb | Structured version Visualization version GIF version |
Description: Restricted quantification over a union. (Contributed by Scott Fenton, 12-Apr-2011.) (Proof shortened by Andrew Salmon, 29-Jun-2011.) |
Ref | Expression |
---|---|
ralunb | ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elunant 4157 | . . . 4 ⊢ ((𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ ((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑))) | |
2 | 1 | albii 1819 | . . 3 ⊢ (∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ ∀𝑥((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑))) |
3 | 19.26 1870 | . . 3 ⊢ (∀𝑥((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑)) ↔ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ∧ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑))) | |
4 | 2, 3 | bitri 277 | . 2 ⊢ (∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ∧ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑))) |
5 | df-ral 3146 | . 2 ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ ∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑)) | |
6 | df-ral 3146 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
7 | df-ral 3146 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑)) | |
8 | 6, 7 | anbi12i 628 | . 2 ⊢ ((∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐵 𝜑) ↔ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ∧ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑))) |
9 | 4, 5, 8 | 3bitr4i 305 | 1 ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 ∀wal 1534 ∈ wcel 2113 ∀wral 3141 ∪ cun 3937 |
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 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ral 3146 df-v 3499 df-un 3944 |
This theorem is referenced by: ralun 4171 raldifeq 4442 ralprgf 4633 raltpg 4637 ralunsn 4827 disjxun 5067 undifixp 8501 ixpfi2 8825 dffi3 8898 fseqenlem1 9453 hashf1lem1 13816 pfxsuffeqwrdeq 14063 rexfiuz 14710 modfsummods 15151 modfsummod 15152 coprmproddvdslem 16009 prmind2 16032 prmreclem2 16256 lubun 17736 efgsp1 18866 coe1fzgsumdlem 20472 evl1gsumdlem 20522 unocv 20827 basdif0 21564 isclo 21698 ordtrest2 21815 ptbasfi 22192 ptcnplem 22232 ptrescn 22250 ordthmeolem 22412 prdsxmetlem 22981 prdsbl 23104 iblcnlem1 24391 ellimc2 24478 rlimcnp 25546 xrlimcnp 25549 ftalem3 25655 dchreq 25837 2sqlem10 26007 dchrisum0flb 26089 pntpbnd1 26165 wlkp1lem8 27465 pthdlem1 27550 crctcshwlkn0lem7 27597 wwlksnext 27674 clwwlkccatlem 27770 clwwlkel 27828 clwwlkwwlksb 27836 wwlksext2clwwlk 27839 clwwlknonex2lem2 27890 3wlkdlem4 27944 3pthdlem1 27946 upgr4cycl4dv4e 27967 dfconngr1 27970 cntzun 30699 ordtrest2NEW 31170 subfacp1lem3 32433 subfacp1lem5 32435 erdszelem8 32449 ssltun1 33273 ssltun2 33274 hfext 33648 bj-raldifsn 34396 finixpnum 34881 lindsadd 34889 lindsenlbs 34891 poimirlem26 34922 poimirlem27 34923 poimirlem32 34928 prdsbnd 35075 rrnequiv 35117 hdmap14lem13 39020 |
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