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| Mirrors > Home > MPE Home > Th. List > 19.42v | Structured version Visualization version GIF version | ||
| Description: Version of 19.42 2244 with a disjoint variable condition requiring fewer axioms. (Contributed by NM, 21-Jun-1993.) |
| Ref | Expression |
|---|---|
| 19.42v | ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 19.41v 1951 | . 2 ⊢ (∃𝑥(𝜓 ∧ 𝜑) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
| 2 | exancom 1863 | . 2 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ ∃𝑥(𝜓 ∧ 𝜑)) | |
| 3 | ancom 460 | . 2 ⊢ ((𝜑 ∧ ∃𝑥𝜓) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
| 4 | 1, 2, 3 | 3bitr4i 303 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 ∃wex 1781 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 |
| This theorem is referenced by: exdistr 1956 19.42vv 1959 19.42vvv 1961 4exdistr 1963 2sb5 2285 eeeanv 2355 eu6lem 2574 r3ex 3177 rexcom4a 3268 ceqsex2 3482 ceqsex2v 3483 reuind 3700 2reu5lem3 3704 sbccomlemOLD 3809 bm1.3iiOLD 5238 eqvinop 5436 dfid2 5522 dmopabss 5868 dmopab3 5869 dmxp 5879 rnopabss 5905 rnopab3 5906 dmres 5972 ssrnres 6137 mptpreima 6197 resco 6209 mptfnf 6628 brprcneu 6825 brprcneuALT 6826 fndmin 6992 fliftf 7264 dfoprab2 7419 dmoprab 7464 dmoprabss 7465 fnoprabg 7484 uniuni 7710 zfrep6OLD 7902 opabex3d 7912 opabex3rd 7913 opabex3 7914 fsplit 8061 eroveu 8753 ensymfib 9112 rankuni 9781 aceq1 10033 dfac3 10037 kmlem14 10080 kmlem15 10081 axdc2lem 10364 1idpr 10946 ltexprlem1 10953 ltexprlem4 10956 xpcogend 14930 shftdm 15027 joindm 18333 meetdm 18347 toprntopon 22903 ntreq0 23055 cnextf 24044 dmcuts 27800 adjeu 31978 rexunirn 32579 fpwrelmapffslem 32823 mxidlnzrb 33558 tgoldbachgt 34826 bnj1019 34941 bnj1209 34957 bnj1033 35130 bnj1189 35170 satfdm 35570 dfiota3 36122 brimg 36136 funpartlem 36143 bj-eeanvw 37031 bj-snsetex 37289 bj-snglc 37295 bj-bm1.3ii 37390 bj-dfid2ALT 37391 bj-axreprepsep 37401 bj-restuni 37428 bj-xpcossxp 37522 bj-imdirco 37523 itg2addnc 38012 sbccom2lem 38462 eldmres 38615 rnxrn 38759 coss1cnvres 38845 nnoeomeqom 43761 rp-isfinite6 43966 undmrnresiss 44052 elintima 44101 pm11.58 44838 pm11.71 44845 2sbc5g 44864 iotasbc2 44868 ax6e2nd 45006 ax6e2ndVD 45355 ax6e2ndALT 45377 modelaxreplem3 45428 stoweidlem60 46509 coxp 49323 mofeu 49338 uobffth 49708 uobeqw 49709 elpglem3 50203 |
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