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Mirrors > Home > MPE Home > Th. List > 19.42v | Structured version Visualization version GIF version |
Description: Version of 19.42 2092 with a dv 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 1901 | . 2 ⊢ (∃𝑥(𝜓 ∧ 𝜑) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
2 | exancom 1774 | . 2 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ ∃𝑥(𝜓 ∧ 𝜑)) | |
3 | ancom 465 | . 2 ⊢ ((𝜑 ∧ ∃𝑥𝜓) ↔ (∃𝑥𝜓 ∧ 𝜑)) | |
4 | 1, 2, 3 | 3bitr4i 291 | 1 ⊢ (∃𝑥(𝜑 ∧ 𝜓) ↔ (𝜑 ∧ ∃𝑥𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 ∧ wa 383 ∃wex 1695 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 |
This theorem depends on definitions: df-bi 196 df-an 385 df-ex 1696 |
This theorem is referenced by: exdistr 1906 19.42vv 1907 19.42vvv 1908 4exdistr 1911 eeeanv 2171 2sb5 2431 rexcom4a 3199 ceqsex2 3217 reuind 3378 2reu5lem3 3382 sbccomlem 3475 bm1.3ii 4712 eqvinop 4881 dmopabss 5258 dmopab3 5259 mptpreima 5545 mptfnf 5928 brprcneu 6096 fndmin 6232 fliftf 6465 dfoprab2 6599 dmoprab 6639 dmoprabss 6640 fnoprabg 6659 uniuni 6865 zfrep6 7027 opabex3d 7037 opabex3 7038 fsplit 7169 eroveu 7729 rankuni 8609 aceq1 8823 dfac3 8827 kmlem14 8868 kmlem15 8869 axdc2lem 9153 1idpr 9730 ltexprlem1 9737 ltexprlem4 9740 xpcogend 13561 shftdm 13659 joindm 16826 meetdm 16840 ntreq0 20691 cnextf 21680 usg2spot2nb 26592 adjeu 28132 rexunirn 28715 fpwrelmapffslem 28895 bnj1019 30104 bnj1209 30121 bnj1033 30291 bnj1189 30331 dfiota3 31200 brimg 31214 funpartlem 31219 bj-eeanvw 31891 bj-rexcom4 32063 bj-rexcom4a 32064 bj-snsetex 32144 bj-snglc 32150 bj-restuni 32231 bj-toprntopon 32244 itg2addnc 32634 sbccom2lem 33099 rp-isfinite6 36883 undmrnresiss 36929 elintima 36964 pm11.58 37612 pm11.71 37619 2sbc5g 37639 iotasbc2 37643 ax6e2nd 37795 ax6e2ndVD 38166 ax6e2ndALT 38188 stoweidlem60 38953 fusgr2wsp2nb 41498 elpglem3 42255 |
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