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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 1980 (see also 19.42 2278). (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 3201 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 465 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3118 | . 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 |
| Syntax hints: ↔ wb 209 ∧ wa 400 ∃wrex 3095 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1807 df-rex 3096 |
| This theorem is referenced by: ceqsrexbv 3624 ceqsrex2v 3626 2reuswap 3718 2reuswap2 3719 2reu5 3730 2rmoswap 3733 dfiun2g 4998 iunrab 5021 iunin2 5039 iundif2 5042 reusv2lem4 5373 iunopab 5545 cnvuni 5877 elidinxp 6047 xpdifid 6166 xpdifcnvepel 6167 dfpo2 6298 elunirn 7250 f1oiso 7350 oprabrexex2 7975 oeeu 8589 trcl 9697 dfac5lem2 10108 axgroth4 10817 rexuz2 12923 4fvwrd4 13676 divalglem10 16460 divalgb 16462 lsmelval2 21184 tgcmp 23527 hauscmplem 23532 unisngl 23653 xkobval 23712 txtube 23766 txcmplem1 23767 txkgen 23778 xkococnlem 23785 mbfaddlem 25788 mbfsup 25792 elaa 26446 dchrisumlem3 27621 elold 28018 colperpexlem3 28972 midex 28977 iscgra1 29078 ax5seg 29229 edglnl 29434 usgr2pth0 30055 hhcmpl 31493 sumdmdii 32708 reuxfrdf 32778 unipreima 32929 fpwrelmapffslem 33018 elirng 34021 esumfsup 34405 reprdifc 34959 bnj168 35064 bnj1398 35367 cvmliftlem15 35723 ellines 36577 bj-elsngl 37526 bj-dfmpoa 37682 ptrecube 38193 cnambfre 38241 islshpat 39715 lfl1dim 39819 glbconxN 40076 3dim0 40155 2dim 40168 1dimN 40169 islpln5 40233 islvol5 40277 dalem20 40391 lhpex2leN 40711 mapdval4N 42330 rexrabdioph 43447 rmxdioph 43669 expdiophlem1 43674 imaiun1 44303 coiun1 44304 ismnuprim 44930 prmunb2 44947 fourierdlem48 46794 2reuimp0 47774 2reuimp 47775 wtgoldbnnsum4prm 48490 bgoldbnnsum3prm 48492 dfvopnbgr2 48541 stgredgiun 48646 islindeps2 49182 isldepslvec2 49184 sepnsepolem1 49619 |
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