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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 5340 iunopab 5509 cnvuni 5837 elidinxp 6005 xpdifid 6128 dfpo2 6256 elunirn 7201 f1oiso 7301 oprabrexex2 7926 oeeu 8534 trcl 9644 dfac5lem2 10041 axgroth4 10750 rexuz2 12844 4fvwrd4 13597 divalglem10 16366 divalgb 16368 lsmelval2 21076 tgcmp 23380 hauscmplem 23385 unisngl 23506 xkobval 23565 txtube 23619 txcmplem1 23620 txkgen 23631 xkococnlem 23638 mbfaddlem 25641 mbfsup 25645 elaa 26297 dchrisumlem3 27472 elold 27869 colperpexlem3 28818 midex 28823 iscgra1 28896 ax5seg 29025 edglnl 29230 usgr2pth0 29852 hhcmpl 31290 sumdmdii 32505 reuxfrdf 32579 unipreima 32735 fpwrelmapffslem 32824 elirng 33850 esumfsup 34234 reprdifc 34791 bnj168 34893 bnj1398 35196 cvmliftlem15 35500 ellines 36354 bj-elsngl 37295 bj-dfmpoa 37450 ptrecube 37959 cnambfre 38007 islshpat 39481 lfl1dim 39585 glbconxN 39842 3dim0 39921 2dim 39934 1dimN 39935 islpln5 39999 islvol5 40043 dalem20 40157 lhpex2leN 40477 mapdval4N 42096 rexrabdioph 43244 rmxdioph 43466 expdiophlem1 43471 imaiun1 44100 coiun1 44101 ismnuprim 44743 prmunb2 44760 fourierdlem48 46604 2reuimp0 47578 2reuimp 47579 wtgoldbnnsum4prm 48294 bgoldbnnsum3prm 48296 dfvopnbgr2 48345 stgredgiun 48450 islindeps2 48975 isldepslvec2 48977 sepnsepolem1 49413 |
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