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Mirrors > Home > MPE Home > Th. List > r19.42v | Structured version Visualization version GIF version |
Description: Restricted quantifier version of 19.42v 1918 (see also 19.42 2105). (Contributed by NM, 27-May-1998.) |
Ref | Expression |
---|---|
r19.42v | ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r19.41v 3089 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
2 | ancom 466 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
3 | 2 | rexbii 3041 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ ∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑)) |
4 | ancom 466 | . 2 ⊢ ((𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
5 | 1, 3, 4 | 3bitr4i 292 | 1 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 196 ∧ wa 384 ∃wrex 2913 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 df-rex 2918 |
This theorem is referenced by: ceqsrexbv 3337 ceqsrex2v 3338 2reuswap 3410 2reu5 3416 iunrab 4567 iunin2 4584 iundif2 4587 reusv2lem4 4872 iunopab 5012 elxp2OLD 5133 cnvuni 5309 xpdifid 5562 elunirn 6509 f1oiso 6601 oprabrexex2 7158 oeeu 7683 trcl 8604 dfac5lem2 8947 axgroth4 9654 rexuz2 11739 4fvwrd4 12459 cshwsexa 13570 divalglem10 15125 divalgb 15127 lsmelval2 19085 tgcmp 21204 hauscmplem 21209 unisngl 21330 xkobval 21389 txtube 21443 txcmplem1 21444 txkgen 21455 xkococnlem 21462 mbfaddlem 23427 mbfsup 23431 elaa 24071 dchrisumlem3 25180 colperpexlem3 25624 midex 25629 iscgra1 25702 ax5seg 25818 edglnl 26038 usgr2pth0 26661 sumdmdii 29274 2reuswap2 29328 unipreima 29446 fpwrelmapffslem 29507 esumfsup 30132 reprdifc 30705 bnj168 30798 bnj1398 31102 cvmliftlem15 31280 dfpo2 31645 ellines 32259 bj-elsngl 32956 bj-dfmpt2a 33071 ptrecube 33409 cnambfre 33458 islshpat 34304 lfl1dim 34408 glbconxN 34664 3dim0 34743 2dim 34756 1dimN 34757 islpln5 34821 islvol5 34865 dalem20 34979 lhpex2leN 35299 mapdval4N 36921 rexrabdioph 37358 rmxdioph 37583 expdiophlem1 37588 imaiun1 37943 coiun1 37944 prmunb2 38510 fourierdlem48 40371 2rmoswap 41184 wtgoldbnnsum4prm 41690 bgoldbnnsum3prm 41692 islindeps2 42272 isldepslvec2 42274 |
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