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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 1955 (see also 19.42 2244). (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 3168 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 460 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3085 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ ∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑)) |
| 4 | ancom 460 | . 2 ⊢ ((𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 5 | 1, 3, 4 | 3bitr4i 303 | 1 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 ∃wrex 3062 |
| 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 1912 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-rex 3063 |
| This theorem is referenced by: ceqsrexbv 3599 ceqsrex2v 3601 2reuswap 3693 2reuswap2 3694 2reu5 3705 2rmoswap 3708 dfiun2g 4973 iunrab 4996 iunin2 5014 iundif2 5017 reusv2lem4 5336 iunopab 5505 cnvuni 5833 elidinxp 6001 xpdifid 6124 dfpo2 6252 elunirn 7197 f1oiso 7297 oprabrexex2 7922 oeeu 8530 trcl 9638 dfac5lem2 10035 axgroth4 10744 rexuz2 12813 4fvwrd4 13565 divalglem10 16330 divalgb 16332 lsmelval2 21039 tgcmp 23344 hauscmplem 23349 unisngl 23470 xkobval 23529 txtube 23583 txcmplem1 23584 txkgen 23595 xkococnlem 23602 mbfaddlem 25605 mbfsup 25609 elaa 26264 dchrisumlem3 27442 elold 27839 colperpexlem3 28788 midex 28793 iscgra1 28866 ax5seg 28995 edglnl 29200 usgr2pth0 29822 hhcmpl 31260 sumdmdii 32475 reuxfrdf 32549 unipreima 32705 fpwrelmapffslem 32794 elirng 33836 esumfsup 34220 reprdifc 34777 bnj168 34879 bnj1398 35182 cvmliftlem15 35486 ellines 36340 bj-elsngl 37273 bj-dfmpoa 37428 ptrecube 37932 cnambfre 37980 islshpat 39454 lfl1dim 39558 glbconxN 39815 3dim0 39894 2dim 39907 1dimN 39908 islpln5 39972 islvol5 40016 dalem20 40130 lhpex2leN 40450 mapdval4N 42069 rexrabdioph 43225 rmxdioph 43447 expdiophlem1 43452 imaiun1 44081 coiun1 44082 ismnuprim 44724 prmunb2 44741 fourierdlem48 46586 2reuimp0 47548 2reuimp 47549 wtgoldbnnsum4prm 48236 bgoldbnnsum3prm 48238 dfvopnbgr2 48287 stgredgiun 48392 islindeps2 48917 isldepslvec2 48919 sepnsepolem1 49355 |
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