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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 1954 (see also 19.42 2243). (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 3166 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 460 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3083 | . 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 3060 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-rex 3061 |
| This theorem is referenced by: ceqsrexbv 3610 ceqsrex2v 3612 2reuswap 3704 2reuswap2 3705 2reu5 3716 2rmoswap 3719 dfiun2g 4985 iunrab 5008 iunin2 5026 iundif2 5029 reusv2lem4 5346 iunopab 5507 cnvuni 5835 elidinxp 6003 xpdifid 6126 dfpo2 6254 elunirn 7197 f1oiso 7297 oprabrexex2 7922 oeeu 8531 trcl 9639 dfac5lem2 10036 axgroth4 10745 rexuz2 12814 4fvwrd4 13566 divalglem10 16331 divalgb 16333 lsmelval2 21039 tgcmp 23347 hauscmplem 23352 unisngl 23473 xkobval 23532 txtube 23586 txcmplem1 23587 txkgen 23598 xkococnlem 23605 mbfaddlem 25619 mbfsup 25623 elaa 26282 dchrisumlem3 27460 elold 27857 colperpexlem3 28806 midex 28811 iscgra1 28884 ax5seg 29013 edglnl 29218 usgr2pth0 29840 hhcmpl 31277 sumdmdii 32492 reuxfrdf 32567 unipreima 32723 fpwrelmapffslem 32813 elirng 33845 esumfsup 34229 reprdifc 34786 bnj168 34888 bnj1398 35192 cvmliftlem15 35494 ellines 36348 bj-elsngl 37171 bj-dfmpoa 37325 ptrecube 37823 cnambfre 37871 islshpat 39299 lfl1dim 39403 glbconxN 39660 3dim0 39739 2dim 39752 1dimN 39753 islpln5 39817 islvol5 39861 dalem20 39975 lhpex2leN 40295 mapdval4N 41914 rexrabdioph 43057 rmxdioph 43279 expdiophlem1 43284 imaiun1 43913 coiun1 43914 ismnuprim 44556 prmunb2 44573 fourierdlem48 46419 2reuimp0 47381 2reuimp 47382 wtgoldbnnsum4prm 48069 bgoldbnnsum3prm 48071 dfvopnbgr2 48120 stgredgiun 48225 islindeps2 48750 isldepslvec2 48752 sepnsepolem1 49188 |
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