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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 1960 (see also 19.42 2248). (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 3169 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 461 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3086 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ ∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑)) |
| 4 | ancom 461 | . 2 ⊢ ((𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 5 | 1, 3, 4 | 3bitr4i 304 | 1 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∧ wa 396 ∃wrex 3063 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-rex 3064 |
| This theorem is referenced by: ceqsrexbv 3594 ceqsrex2v 3596 2reuswap 3687 2reuswap2 3688 2reu5 3699 2rmoswap 3702 dfiun2g 4960 iunrab 4983 iunin2 5001 iundif2 5004 reusv2lem4 5331 iunopab 5502 cnvuni 5829 elidinxp 5997 xpdifid 6120 dfpo2 6248 elunirn 7196 f1oiso 7296 oprabrexex2 7921 oeeu 8530 trcl 9641 dfac5lem2 10038 axgroth4 10747 rexuz2 12841 4fvwrd4 13594 divalglem10 16363 divalgb 16365 lsmelval2 21076 tgcmp 23385 hauscmplem 23390 unisngl 23511 xkobval 23570 txtube 23624 txcmplem1 23625 txkgen 23636 xkococnlem 23643 mbfaddlem 25646 mbfsup 25650 elaa 26301 dchrisumlem3 27473 elold 27870 colperpexlem3 28819 midex 28824 iscgra1 28897 ax5seg 29026 edglnl 29231 usgr2pth0 29852 hhcmpl 31290 sumdmdii 32505 reuxfrdf 32579 unipreima 32736 fpwrelmapffslem 32825 elirng 33879 esumfsup 34263 reprdifc 34820 bnj168 34922 bnj1398 35225 cvmliftlem15 35535 ellines 36389 bj-elsngl 37330 bj-dfmpoa 37485 ptrecube 37996 cnambfre 38044 islshpat 39518 lfl1dim 39622 glbconxN 39879 3dim0 39958 2dim 39971 1dimN 39972 islpln5 40036 islvol5 40080 dalem20 40194 lhpex2leN 40514 mapdval4N 42133 rexrabdioph 43248 rmxdioph 43470 expdiophlem1 43475 imaiun1 44104 coiun1 44105 ismnuprim 44747 prmunb2 44764 fourierdlem48 46605 2reuimp0 47585 2reuimp 47586 wtgoldbnnsum4prm 48301 bgoldbnnsum3prm 48303 dfvopnbgr2 48352 stgredgiun 48457 islindeps2 48982 isldepslvec2 48984 sepnsepolem1 49420 |
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