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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 1986 (see also 19.42 2272). (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 3192 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 466 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3109 | . 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 306 | 1 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥 ∈ 𝐴 𝜓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 ∃wrex 3086 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-rex 3087 |
| This theorem is used by: ceqsrexbv 3610 ceqsrex2v 3612 2reuswap 3704 2reuswap2 3705 2reu5 3716 2rmoswap 3719 dfiun2g 4988 iunrab 5011 iunin2 5029 iundif2 5032 reusv2lem4 5366 iunopab 5538 cnvuni 5870 elidinxp 6040 xpdifid 6160 xpdifcnvepel 6161 dfpo2 6294 elunirn 7249 f1oiso 7353 oprabrexex2 7976 oeeu 8594 trcl 9710 dfac5lem2 10130 axgroth4 10844 rexuz2 12951 4fvwrd4 13706 divalglem10 16495 divalgb 16497 lsmelval2 21272 tgcmp 23629 hauscmplem 23634 unisngl 23756 xkobval 23815 txtube 23869 txcmplem1 23870 txkgen 23881 xkococnlem 23888 mbfaddlem 25891 mbfsup 25895 elaa 26551 dchrisumlem3 27730 elold 28127 colperpexlem3 29090 midex 29095 iscgra1 29199 ax5seg 29398 edglnl 29603 usgr2pth0 30233 hhcmpl 31684 sumdmdii 32899 reuxfrdf 32969 unipreima 33119 fpwrelmapffslem 33206 elirng 34199 esumfsup 34583 reprdifc 35138 bnj168 35243 bnj1398 35546 cvmliftlem15 35880 ellines 36735 bj-elsngl 37715 bj-dfmpoa 37871 ptrecube 38372 cnambfre 38420 islshpat 39893 lfl1dim 39997 glbconxN 40254 3dim0 40333 2dim 40346 1dimN 40347 islpln5 40411 islvol5 40455 dalem20 40569 lhpex2leN 40889 mapdval4N 42508 rexrabdioph 43638 rmxdioph 43860 expdiophlem1 43865 imaiun1 44494 coiun1 44495 ismnuprim 45121 prmunb2 45138 fourierdlem48 46985 2reuimp0 48005 2reuimp 48006 wtgoldbnnsum4prm 48721 bgoldbnnsum3prm 48723 dfvopnbgr2 48772 stgredgiun 48877 islindeps2 49416 isldepslvec2 49418 sepnsepolem1 49851 |
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