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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 4105 | . . . 4 ⊢ ((𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ ((𝑥 ∈ 𝐴 → 𝜑) ∧ (𝑥 ∈ 𝐵 → 𝜑))) | |
2 | 1 | albii 1821 | . . 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 278 | . 2 ⊢ (∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑) ↔ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ∧ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑))) |
5 | df-ral 3111 | . 2 ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ ∀𝑥(𝑥 ∈ (𝐴 ∪ 𝐵) → 𝜑)) | |
6 | df-ral 3111 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
7 | df-ral 3111 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑)) | |
8 | 6, 7 | anbi12i 629 | . 2 ⊢ ((∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐵 𝜑) ↔ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ∧ ∀𝑥(𝑥 ∈ 𝐵 → 𝜑))) |
9 | 4, 5, 8 | 3bitr4i 306 | 1 ⊢ (∀𝑥 ∈ (𝐴 ∪ 𝐵)𝜑 ↔ (∀𝑥 ∈ 𝐴 𝜑 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∀wal 1536 ∈ wcel 2111 ∀wral 3106 ∪ cun 3879 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-ral 3111 df-v 3443 df-un 3886 |
This theorem is referenced by: ralun 4119 raldifeq 4397 ralprgf 4590 raltpg 4594 ralunsn 4786 disjxun 5028 undifixp 8481 ixpfi2 8806 dffi3 8879 fseqenlem1 9435 hashf1lem1 13809 pfxsuffeqwrdeq 14051 rexfiuz 14699 modfsummods 15140 modfsummod 15141 coprmproddvdslem 15996 prmind2 16019 prmreclem2 16243 lubun 17725 efgsp1 18855 unocv 20369 coe1fzgsumdlem 20930 evl1gsumdlem 20980 basdif0 21558 isclo 21692 ordtrest2 21809 ptbasfi 22186 ptcnplem 22226 ptrescn 22244 ordthmeolem 22406 prdsxmetlem 22975 prdsbl 23098 iblcnlem1 24391 ellimc2 24480 rlimcnp 25551 xrlimcnp 25554 ftalem3 25660 dchreq 25842 2sqlem10 26012 dchrisum0flb 26094 pntpbnd1 26170 wlkp1lem8 27470 pthdlem1 27555 crctcshwlkn0lem7 27602 wwlksnext 27679 clwwlkccatlem 27774 clwwlkel 27831 clwwlkwwlksb 27839 wwlksext2clwwlk 27842 clwwlknonex2lem2 27893 3wlkdlem4 27947 3pthdlem1 27949 upgr4cycl4dv4e 27970 dfconngr1 27973 cntzun 30745 ordtrest2NEW 31276 subfacp1lem3 32542 subfacp1lem5 32544 erdszelem8 32558 ssltun1 33382 ssltun2 33383 hfext 33757 bj-raldifsn 34515 finixpnum 35042 lindsadd 35050 lindsenlbs 35052 poimirlem26 35083 poimirlem27 35084 poimirlem32 35089 prdsbnd 35231 rrnequiv 35273 hdmap14lem13 39176 |
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