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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 2384. (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 2604 2mo2 2678 reeanv 3240 cgsex2g 3503 cgsex4g 3504 spc2egv 3561 spc2ed 3563 dtruALT2 5346 exexneq 5421 copsex2t 5480 xpnz 6161 fununi 6618 frrlem4 8295 tfrlem7 8379 ener 9007 domtr 9013 unen 9052 undom 9063 sbthlem10 9094 mapen 9139 entrfil 9179 domtrfil 9186 sbthfilem 9192 infxpenc2 10025 fseqen 10030 dfac5lem4 10129 zorn2lem6 10503 fpwwe2lem11 10644 genpnnp 11008 hashfacen 14511 summo 15794 ntrivcvgmul 15982 prodmo 16016 iscatd2 17762 catcone0 17768 gictr 19377 gsumval3eu 20005 rictr 20637 ptbasin 23771 txcls 23798 txbasval 23800 hmphtr 23977 reconn 25023 phtpcer 25191 pcohtpy 25216 mbfi1flimlem 25918 mbfmullem 25921 itg2add 25955 brabgaf 32988 pconnconn 35744 txsconn 35754 neibastop1 36911 bj-unexg 37715 cgsex2gd 37822 copsex2d 37824 riscer 38680 dmxrn 39077 disjecxrn 39102 br1cosscnvxrn 39254 dmqsblocks 39657 fnchoice 45790 fzisoeu 46060 stoweidlem35 46790 elsprel 48265 grictr 48729 |
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