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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 2273). (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 3193 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 466 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3110 | . 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 3087 |
| 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 3088 |
| 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 5363 iunopab 5534 cnvuni 5868 elidinxp 6036 xpdifid 6159 xpdifcnvepel 6160 dfpo2 6299 elunirn 7255 f1oiso 7359 oprabrexex2 7990 oeeu 8612 trcl 9729 dfac5lem2 10203 axgroth4 10917 rexuz2 13026 4fvwrd4 13782 divalglem10 16572 divalgb 16574 lsmelval2 21360 tgcmp 23719 hauscmplem 23724 unisngl 23846 xkobval 23905 txtube 23959 txcmplem1 23960 txkgen 23971 xkococnlem 23978 mbfaddlem 25981 mbfsup 25985 elaa 26639 dchrisumlem3 27818 elold 28245 colperpexlem3 29208 midex 29213 iscgra1 29317 ax5seg 29516 edglnl 29721 usgr2pth0 30351 hhcmpl 31802 sumdmdii 33017 reuxfrdf 33087 unipreima 33237 fpwrelmapffslem 33324 elirng 34318 esumfsup 34702 reprdifc 35256 bnj168 35361 bnj1398 35664 cvmliftlem15 36063 ellines 36917 bj-elsngl 37881 bj-dfmpoa 38039 ptrecube 38538 cnambfre 38586 islshpat 40074 lfl1dim 40178 glbconxN 40435 3dim0 40514 2dim 40527 1dimN 40528 islpln5 40592 islvol5 40636 dalem20 40750 lhpex2leN 41070 mapdval4N 42689 rexrabdioph 43800 rmxdioph 44022 expdiophlem1 44027 imaiun1 44650 coiun1 44651 ismnuprim 45277 prmunb2 45294 fourierdlem48 47163 2reuimp0 48183 2reuimp 48184 wtgoldbnnsum4prm 48899 bgoldbnnsum3prm 48901 dfvopnbgr2 48950 stgredgiun 49055 islindeps2 49594 isldepslvec2 49596 sepnsepolem1 50029 |
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