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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 3167 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 460 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3084 | . 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 3061 |
| 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 3062 |
| This theorem is referenced by: ceqsrexbv 3598 ceqsrex2v 3600 2reuswap 3692 2reuswap2 3693 2reu5 3704 2rmoswap 3707 dfiun2g 4972 iunrab 4995 iunin2 5013 iundif2 5016 reusv2lem4 5343 iunopab 5514 cnvuni 5841 elidinxp 6009 xpdifid 6132 dfpo2 6260 elunirn 7206 f1oiso 7306 oprabrexex2 7931 oeeu 8539 trcl 9649 dfac5lem2 10046 axgroth4 10755 rexuz2 12849 4fvwrd4 13602 divalglem10 16371 divalgb 16373 lsmelval2 21080 tgcmp 23366 hauscmplem 23371 unisngl 23492 xkobval 23551 txtube 23605 txcmplem1 23606 txkgen 23617 xkococnlem 23624 mbfaddlem 25627 mbfsup 25631 elaa 26282 dchrisumlem3 27454 elold 27851 colperpexlem3 28800 midex 28805 iscgra1 28878 ax5seg 29007 edglnl 29212 usgr2pth0 29833 hhcmpl 31271 sumdmdii 32486 reuxfrdf 32560 unipreima 32716 fpwrelmapffslem 32805 elirng 33830 esumfsup 34214 reprdifc 34771 bnj168 34873 bnj1398 35176 cvmliftlem15 35480 ellines 36334 bj-elsngl 37275 bj-dfmpoa 37430 ptrecube 37941 cnambfre 37989 islshpat 39463 lfl1dim 39567 glbconxN 39824 3dim0 39903 2dim 39916 1dimN 39917 islpln5 39981 islvol5 40025 dalem20 40139 lhpex2leN 40459 mapdval4N 42078 rexrabdioph 43222 rmxdioph 43444 expdiophlem1 43449 imaiun1 44078 coiun1 44079 ismnuprim 44721 prmunb2 44738 fourierdlem48 46582 2reuimp0 47562 2reuimp 47563 wtgoldbnnsum4prm 48278 bgoldbnnsum3prm 48280 dfvopnbgr2 48329 stgredgiun 48434 islindeps2 48959 isldepslvec2 48961 sepnsepolem1 49397 |
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