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Mirrors > Home > MPE Home > Th. List > 19.42v | Structured version Visualization version GIF version |
Description: Version of 19.42 2236 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 1950 | . 2 ⊢ (∃𝑥(𝜓 ∧ 𝜑) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
2 | exancom 1862 | . 2 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ ∃𝑥(𝜓 ∧ 𝜑)) | |
3 | ancom 464 | . 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 399 ∃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 1911 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 |
This theorem is referenced by: exdistr 1955 19.42vv 1958 19.42vvv 1960 19.42vvvOLD 1961 4exdistr 1963 2sb5 2278 eeeanv 2360 eu6lem 2633 rexcom4 3212 rexcom4a 3214 cbvrexdva2 3404 ceqsex2 3491 ceqsex2v 3492 reuind 3692 2reu5lem3 3696 sbccomlem 3799 bm1.3ii 5170 eqvinop 5343 dmopabss 5751 dmopab3 5752 dmres 5840 ssrnres 6002 mptpreima 6059 resco 6070 mptfnf 6455 brprcneu 6637 fndmin 6792 fliftf 7047 dfoprab2 7191 dmoprab 7234 dmoprabss 7235 fnoprabg 7254 uniuni 7464 zfrep6 7638 opabex3d 7648 opabex3rd 7649 opabex3 7650 fsplit 7795 fsplitOLD 7796 eroveu 8375 rankuni 9276 aceq1 9528 dfac3 9532 kmlem14 9574 kmlem15 9575 axdc2lem 9859 1idpr 10440 ltexprlem1 10447 ltexprlem4 10450 xpcogend 14325 shftdm 14422 joindm 17605 meetdm 17619 toprntopon 21530 ntreq0 21682 cnextf 22671 adjeu 29672 rexunirn 30263 fpwrelmapffslem 30494 mxidlnzrb 31052 tgoldbachgt 32044 bnj1019 32161 bnj1209 32178 bnj1033 32351 bnj1189 32391 satfdm 32729 dmscut 33385 dfiota3 33497 brimg 33511 funpartlem 33516 bj-eeanvw 34160 bj-snsetex 34399 bj-snglc 34405 bj-bm1.3ii 34481 bj-restuni 34512 bj-xpcossxp 34604 bj-imdirco 34605 itg2addnc 35111 sbccom2lem 35562 eldmres 35690 rnxrn 35806 rp-isfinite6 40226 undmrnresiss 40304 elintima 40354 pm11.58 41094 pm11.71 41101 2sbc5g 41120 iotasbc2 41124 ax6e2nd 41264 ax6e2ndVD 41614 ax6e2ndALT 41636 stoweidlem60 42702 elpglem3 45242 |
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