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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 2275). (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 3197 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜓 ∧ 𝜑) ↔ (∃𝑥 ∈ 𝐴 𝜓 ∧ 𝜑)) | |
| 2 | ancom 466 | . . 3 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) | |
| 3 | 2 | rexbii 3114 | . 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 3091 |
| 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 3092 |
| This theorem is used by: ceqsrexbv 3617 ceqsrex2v 3619 2reuswap 3711 2reuswap2 3712 2reu5 3723 2rmoswap 3726 dfiun2g 4996 iunrab 5019 iunin2 5037 iundif2 5040 reusv2lem4 5374 iunopab 5546 cnvuni 5878 elidinxp 6048 xpdifid 6167 xpdifcnvepel 6168 dfpo2 6301 elunirn 7254 f1oiso 7358 oprabrexex2 7981 oeeu 8595 trcl 9704 dfac5lem2 10124 axgroth4 10836 rexuz2 12943 4fvwrd4 13697 divalglem10 16486 divalgb 16488 lsmelval2 21260 tgcmp 23612 hauscmplem 23617 unisngl 23739 xkobval 23798 txtube 23852 txcmplem1 23853 txkgen 23864 xkococnlem 23871 mbfaddlem 25874 mbfsup 25878 elaa 26532 dchrisumlem3 27710 elold 28107 colperpexlem3 29068 midex 29073 iscgra1 29176 ax5seg 29347 edglnl 29552 usgr2pth0 30182 hhcmpl 31627 sumdmdii 32842 reuxfrdf 32912 unipreima 33063 fpwrelmapffslem 33151 elirng 34144 esumfsup 34528 reprdifc 35083 bnj168 35188 bnj1398 35491 cvmliftlem15 35831 ellines 36685 bj-elsngl 37665 bj-dfmpoa 37821 ptrecube 38332 cnambfre 38380 islshpat 39853 lfl1dim 39957 glbconxN 40214 3dim0 40293 2dim 40306 1dimN 40307 islpln5 40371 islvol5 40415 dalem20 40529 lhpex2leN 40849 mapdval4N 42468 rexrabdioph 43598 rmxdioph 43820 expdiophlem1 43825 imaiun1 44454 coiun1 44455 ismnuprim 45081 prmunb2 45098 fourierdlem48 46945 2reuimp0 47928 2reuimp 47929 wtgoldbnnsum4prm 48644 bgoldbnnsum3prm 48646 dfvopnbgr2 48695 stgredgiun 48800 islindeps2 49339 isldepslvec2 49341 sepnsepolem1 49776 |
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