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| Mirrors > Home > MPE Home > Th. List > exdistrv | Structured version Visualization version GIF version | ||
| Description: Distribute a pair of existential quantifiers (over disjoint variables) over a conjunction. Combination of 19.41v 1982 and 19.42v 1986. For a version with fewer disjoint variable conditions but requiring more axioms, see eeanv 2379. (Contributed by BJ, 30-Sep-2022.) |
| Ref | Expression |
|---|---|
| exdistrv | ⊢ (∃𝑥∃𝑦(𝜑 ∧ 𝜓) ↔ (∃𝑥𝜑 ∧ ∃𝑦𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | exdistr 1987 | . 2 ⊢ (∃𝑥∃𝑦(𝜑 ∧ 𝜓) ↔ ∃𝑥(𝜑 ∧ ∃𝑦𝜓)) | |
| 2 | 19.41v 1982 | . 2 ⊢ (∃𝑥(𝜑 ∧ ∃𝑦𝜓) ↔ (∃𝑥𝜑 ∧ ∃𝑦𝜓)) | |
| 3 | 1, 2 | bitri 278 | 1 ⊢ (∃𝑥∃𝑦(𝜑 ∧ 𝜓) ↔ (∃𝑥𝜑 ∧ ∃𝑦𝜓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 ∃wex 1812 |
| 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 |
| This theorem is used by: 4exdistrv 1989 eu6lem 2599 2mo2 2673 reeanv 3235 cgsex2g 3496 cgsex4g 3497 spc2egv 3554 spc2ed 3556 dtruALT2 5332 exexneq 5403 copsex2t 5464 xpnz 6149 fununi 6607 frrlem4 8291 tfrlem7 8375 ener 9012 domtr 9018 unen 9057 undom 9068 sbthlem10 9099 mapen 9144 entrfil 9184 domtrfil 9191 sbthfilem 9197 infxpenc2 10082 fseqen 10087 dfac5lem4 10186 zorn2lem6 10560 fpwwe2lem11 10707 genpnnp 11071 hashfacen 14579 summo 15863 ntrivcvgmul 16051 prodmo 16083 iscatd2 17835 catcone0 17841 gictr 19470 gsumval3eu 20098 rictr 20732 ptbasin 23876 txcls 23903 txbasval 23905 hmphtr 24082 reconn 25128 phtpcer 25296 pcohtpy 25321 mbfi1flimlem 26023 mbfmullem 26026 itg2add 26060 brabgaf 33182 pconnconn 35965 txsconn 35975 neibastop1 37117 bj-unexg 37921 cgsex2gd 38026 copsex2d 38028 riscer 38890 dmxrn 39287 disjecxrn 39312 br1cosscnvxrn 39464 dmqsblocks 39867 fnchoice 45989 fzisoeu 46259 stoweidlem35 46989 elsprel 48501 grictr 48965 |
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