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| Mirrors > Home > MPE Home > Th. List > 19.42v | Structured version Visualization version GIF version | ||
| Description: Version of 19.42 2278 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 1976 | . 2 ⊢ (∃𝑥(𝜓 ∧ 𝜑) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
| 2 | exancom 1888 | . 2 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ ∃𝑥(𝜓 ∧ 𝜑)) | |
| 3 | ancom 465 | . 2 ⊢ ((𝜑 ∧ ∃𝑥𝜓) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
| 4 | 1, 2, 3 | 3bitr4i 306 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∧ wa 400 ∃wex 1806 |
| 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 |
| This theorem is referenced by: exdistr 1981 19.42vv 1984 19.42vvv 1986 4exdistr 1988 2sb5 2319 eeeanv 2388 eu6lem 2607 r3ex 3210 rexcom4a 3301 ceqsex2 3513 ceqsex2v 3514 reuind 3725 2reu5lem3 3729 sbccomlemOLD 3832 bm1.3iiOLD 5267 eqvinop 5470 copsexgw 5473 dfid2 5559 dmopabss 5909 dmopab3 5910 dmxp 5920 rnopabss 5946 rnopab3 5947 dmres 6012 ssrnres 6177 mptpreima 6240 resco 6252 mptfnf 6671 brprcneu 6872 brprcneuALT 6873 fndmin 7041 fliftf 7314 dfoprab2 7469 dmoprab 7514 dmoprabss 7515 fnoprabg 7534 uniuni 7761 zfrep6OLD 7952 opabex3d 7962 opabex3rd 7963 opabex3 7964 fsplit 8112 eroveu 8810 ensymfib 9168 rankuni 9835 aceq1 10101 dfac3 10105 kmlem14 10147 kmlem15 10148 axdc2lem 10432 1idpr 11014 ltexprlem1 11021 ltexprlem4 11024 xpcogend 15011 shftdm 15108 joindm 18429 meetdm 18443 toprntopon 23051 ntreq0 23203 cnextf 24192 dmcuts 27950 adjeu 32182 rexunirn 32779 fpwrelmapffslem 33018 mxidlnzrb 33707 tgoldbachgt 34995 bnj1019 35113 bnj1209 35129 bnj1033 35302 bnj1189 35342 vonf1oonfo 35498 satfdm 35760 dfiota3 36312 brimg 36326 funpartlem 36333 bj-eeanvw 37229 bj-snsetex 37487 bj-snglc 37493 bj-bm1.3ii 37588 bj-dfid2ALT 37589 bj-axreprepsep 37600 bj-restuni 37627 bj-xpcossxp 37721 bj-imdirco 37722 itg2addnc 38213 sbccom2lem 38663 eldmres 38816 rnxrn 38960 coss1cnvres 39046 nnoeomeqom 43931 rp-isfinite6 44136 undmrnresiss 44222 elintima 44271 pm11.58 44992 pm11.71 44999 2sbc5g 45018 iotasbc2 45022 ax6e2nd 45159 ax6e2ndVD 45508 ax6e2ndALT 45530 modelaxreplem3 45581 stoweidlem60 46666 coxp 49496 mofeu 49511 uobffth 49881 uobeqw 49882 elpglem3 50376 |
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