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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 4156 | . . . 4 ⊢ ((𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ ((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑))) | |
2 | 1 | albii 1820 | . . 3 ⊢ (∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ ∀𝑥((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑))) |
3 | 19.26 1871 | . . 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 3145 | . 2 ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ ∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑)) | |
6 | df-ral 3145 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
7 | df-ral 3145 | . . 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 1535 ∈ wcel 2114 ∀wral 3140 ∪ cun 3936 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ral 3145 df-v 3498 df-un 3943 |
This theorem is referenced by: ralun 4170 raldifeq 4441 ralprgf 4632 raltpg 4636 ralunsn 4826 disjxun 5066 undifixp 8500 ixpfi2 8824 dffi3 8897 fseqenlem1 9452 hashf1lem1 13816 pfxsuffeqwrdeq 14062 rexfiuz 14709 modfsummods 15150 modfsummod 15151 coprmproddvdslem 16008 prmind2 16031 prmreclem2 16255 lubun 17735 efgsp1 18865 coe1fzgsumdlem 20471 evl1gsumdlem 20521 unocv 20826 basdif0 21563 isclo 21697 ordtrest2 21814 ptbasfi 22191 ptcnplem 22231 ptrescn 22249 ordthmeolem 22411 prdsxmetlem 22980 prdsbl 23103 iblcnlem1 24390 ellimc2 24477 rlimcnp 25545 xrlimcnp 25548 ftalem3 25654 dchreq 25836 2sqlem10 26006 dchrisum0flb 26088 pntpbnd1 26164 wlkp1lem8 27464 pthdlem1 27549 crctcshwlkn0lem7 27596 wwlksnext 27673 clwwlkccatlem 27769 clwwlkel 27827 clwwlkwwlksb 27835 wwlksext2clwwlk 27838 clwwlknonex2lem2 27889 3wlkdlem4 27943 3pthdlem1 27945 upgr4cycl4dv4e 27966 dfconngr1 27969 cntzun 30697 ordtrest2NEW 31168 subfacp1lem3 32431 subfacp1lem5 32433 erdszelem8 32447 ssltun1 33271 ssltun2 33272 hfext 33646 bj-raldifsn 34394 finixpnum 34879 lindsadd 34887 lindsenlbs 34889 poimirlem26 34920 poimirlem27 34921 poimirlem32 34926 prdsbnd 35073 rrnequiv 35115 hdmap14lem13 39018 |
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