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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 1983 (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 3195 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 465 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3112 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ ∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑)) |
| 4 | ancom 465 | . 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 400 ∃wrex 3089 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 |
| This proof depends on definitions: df-bi 210 df-an 401 df-ex 1810 df-rex 3090 |
| This theorem is used by: ceqsrexbv 3615 ceqsrex2v 3617 2reuswap 3709 2reuswap2 3710 2reu5 3721 2rmoswap 3724 dfiun2g 4994 iunrab 5017 iunin2 5035 iundif2 5038 reusv2lem4 5372 iunopab 5544 cnvuni 5876 elidinxp 6046 xpdifid 6165 xpdifcnvepel 6166 dfpo2 6297 elunirn 7249 f1oiso 7349 oprabrexex2 7971 oeeu 8585 trcl 9693 dfac5lem2 10113 axgroth4 10821 rexuz2 12927 4fvwrd4 13681 divalglem10 16464 divalgb 16466 lsmelval2 21215 tgcmp 23567 hauscmplem 23572 unisngl 23693 xkobval 23752 txtube 23806 txcmplem1 23807 txkgen 23818 xkococnlem 23825 mbfaddlem 25828 mbfsup 25832 elaa 26486 dchrisumlem3 27664 elold 28061 colperpexlem3 29022 midex 29027 iscgra1 29130 ax5seg 29297 edglnl 29502 usgr2pth0 30123 hhcmpl 31561 sumdmdii 32776 reuxfrdf 32846 unipreima 32997 fpwrelmapffslem 33086 elirng 34085 esumfsup 34469 reprdifc 35023 bnj168 35128 bnj1398 35431 cvmliftlem15 35798 ellines 36652 bj-elsngl 37632 bj-dfmpoa 37788 ptrecube 38299 cnambfre 38347 islshpat 39819 lfl1dim 39923 glbconxN 40180 3dim0 40259 2dim 40272 1dimN 40273 islpln5 40337 islvol5 40381 dalem20 40495 lhpex2leN 40815 mapdval4N 42434 rexrabdioph 43549 rmxdioph 43771 expdiophlem1 43776 imaiun1 44405 coiun1 44406 ismnuprim 45032 prmunb2 45049 fourierdlem48 46896 2reuimp0 47879 2reuimp 47880 wtgoldbnnsum4prm 48595 bgoldbnnsum3prm 48597 dfvopnbgr2 48646 stgredgiun 48751 islindeps2 49291 isldepslvec2 49293 sepnsepolem1 49728 |
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