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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 2380. (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 2600 2mo2 2674 reeanv 3236 cgsex2g 3498 cgsex4g 3499 spc2egv 3556 spc2ed 3558 dtruALT2 5339 exexneq 5414 copsex2t 5473 xpnz 6155 fununi 6612 frrlem4 8292 tfrlem7 8376 ener 9011 domtr 9017 unen 9056 undom 9067 sbthlem10 9098 mapen 9143 entrfil 9183 domtrfil 9190 sbthfilem 9196 infxpenc2 10029 fseqen 10034 dfac5lem4 10133 zorn2lem6 10507 fpwwe2lem11 10654 genpnnp 11018 hashfacen 14523 summo 15807 ntrivcvgmul 15995 prodmo 16029 iscatd2 17775 catcone0 17781 gictr 19409 gsumval3eu 20037 rictr 20669 ptbasin 23809 txcls 23836 txbasval 23838 hmphtr 24015 reconn 25061 phtpcer 25229 pcohtpy 25254 mbfi1flimlem 25956 mbfmullem 25959 itg2add 25993 brabgaf 33087 pconnconn 35818 txsconn 35828 neibastop1 36986 bj-unexg 37790 cgsex2gd 37897 copsex2d 37899 riscer 38746 dmxrn 39143 disjecxrn 39168 br1cosscnvxrn 39320 dmqsblocks 39723 fnchoice 45871 fzisoeu 46141 stoweidlem35 46871 elsprel 48383 grictr 48847 |
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