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Mirrors > Home > MPE Home > Th. List > r19.41v | Structured version Visualization version GIF version |
Description: Restricted quantifier version 19.41v 1953. Version of r19.41 3244 with a disjoint variable condition, requiring fewer axioms. (Contributed by NM, 17-Dec-2003.) Reduce dependencies on axioms. (Revised by BJ, 29-Mar-2020.) |
Ref | Expression |
---|---|
r19.41v | ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜑 ∧ 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anass 469 | . . . 4 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓) ↔ (𝑥 ∈ 𝐴 ∧ (𝜑 ∧ 𝜓))) | |
2 | 1 | exbii 1850 | . . 3 ⊢ (∃𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓) ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ (𝜑 ∧ 𝜓))) |
3 | 19.41v 1953 | . . 3 ⊢ (∃𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓) ↔ (∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓)) | |
4 | 2, 3 | bitr3i 276 | . 2 ⊢ (∃𝑥(𝑥 ∈ 𝐴 ∧ (𝜑 ∧ 𝜓)) ↔ (∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓)) |
5 | df-rex 3070 | . 2 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ (𝜑 ∧ 𝜓))) | |
6 | df-rex 3070 | . . 3 ⊢ (∃𝑥 ∈ 𝐴 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑)) | |
7 | 6 | anbi1i 624 | . 2 ⊢ ((∃𝑥 ∈ 𝐴 𝜑 ∧ 𝜓) ↔ (∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) ∧ 𝜓)) |
8 | 4, 5, 7 | 3bitr4i 302 | 1 ⊢ (∃𝑥 ∈ 𝐴 (𝜑 ∧ 𝜓) ↔ (∃𝑥 ∈ 𝐴 𝜑 ∧ 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ wa 396 ∃wex 1781 ∈ wcel 2106 ∃wrex 3069 |
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 1913 |
This theorem depends on definitions: df-bi 206 df-an 397 df-ex 1782 df-rex 3070 |
This theorem is referenced by: r19.42v 3183 r19.41vv 3213 3reeanv 3216 reuxfr1d 3711 reuind 3714 iuncom4 4967 dfiun2gOLD 4996 iunxiun 5062 inuni 5305 xpiundi 5707 xpiundir 5708 imaco 6208 coiun 6213 abrexco 7196 imaiun 7197 isomin 7287 isoini 7288 imaeqsexv 7313 imaeqexov 7597 oarec 8514 mapsnend 8987 unfi 9123 brttrcl2 9659 genpass 10954 4fvwrd4 13571 4sqlem12 16839 imasleval 17437 lsmspsn 20602 utoptop 23623 metrest 23917 metust 23951 cfilucfil 23952 metuel2 23958 sleadd1 27341 addsunif 27353 addsasslem1 27354 addsasslem2 27355 istrkg2ld 27465 axsegcon 27939 fusgreg2wsp 29343 nmoo0 29796 nmop0 30991 nmfn0 30992 rexunirn 31484 dmrab 31489 iunrnmptss 31551 ressupprn 31672 ordtconnlem1 32594 dya2icoseg2 32967 dya2iocnei 32971 omssubaddlem 32988 omssubadd 32989 satfvsuclem2 34041 satf0 34053 satffunlem1lem2 34084 satffunlem2lem2 34087 bj-mpomptALT 35663 mptsnunlem 35882 fvineqsneq 35956 rabiun 36124 iundif1 36125 poimir 36184 ismblfin 36192 eldmqs1cossres 37194 erimeq2 37213 prter2 37416 prter3 37417 islshpat 37552 lshpsmreu 37644 islpln5 38071 islvol5 38115 cdlemftr3 39101 dvhb1dimN 39522 dib1dim 39701 mapdpglem3 40211 hdmapglem7a 40463 diophrex 41156 r19.41dv 47007 |
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