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| Mirrors > Home > MPE Home > Th. List > 2ralbidva | Structured version Visualization version GIF version | ||
| Description: Formula-building rule for restricted universal quantifiers (deduction form). (Contributed by NM, 4-Mar-1997.) Reduce dependencies on axioms. (Revised by Wolf Lammen, 9-Dec-2019.) |
| Ref | Expression |
|---|---|
| 2ralbidva.1 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝜓 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| 2ralbidva | ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ralbidva.1 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝜓 ↔ 𝜒)) | |
| 2 | 1 | anassrs 472 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵) → (𝜓 ↔ 𝜒)) |
| 3 | 2 | ralbidva 3186 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 4 | 3 | ralbidva 3186 | 1 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2143 ∀wral 3079 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 |
| This proof depends on definitions: df-bi 210 df-an 401 df-ral 3080 |
| This theorem is used by: disjxun 5107 reu3op 6293 opreu2reurex 6295 isocnv3 7330 isotr 7334 f1oweALT 7965 fnmpoovd 8078 pospropd 18385 tosso 18477 isipodrs 18597 mgmpropd 18713 mgmhmpropd 18760 sgrppropd 18793 mndpropd 18821 mhmpropd 18854 efgred 19822 cmnpropd 19865 rngpropd 20256 ringpropd 20376 isdomn3 20822 lmodprop2d 21054 lsspropd 21147 islmhm2 21168 lmhmpropd 21203 df2idl2crng 21430 islindf4 21997 assapropd 22030 scmatmats 22677 cpmatel2 22879 1elcpmat 22881 m2cpminvid2 22921 decpmataa0 22934 pmatcollpw2lem 22943 connsub 23587 hausdiag 23811 ist0-4 23895 ismet2 24499 txmetcnp 24713 txmetcn 24714 metuel2 24731 metucn 24737 isngp3 24764 nlmvscn 24853 isclmp 25265 isncvsngp 25317 ipcn 25414 iscfil2 25434 caucfil 25451 cfilresi 25463 ulmdvlem3 26574 cxpcn3 26922 tgjustf 28751 tgjustr 28752 tgcgr4 28809 perpcom 29002 brbtwn2 29264 colinearalglem2 29266 eengtrkg 29345 isarchi2 33514 opprlidlabs 33776 elmrsubrn 36020 nmulprop 36690 nmulcom 36694 nadddilem2 36721 nadddilem4 36723 isbnd3b 38464 iscvlat2N 40126 ishlat3N 40156 gicabl 43854 lindslinindsimp2 49271 joindm3 49775 meetdm3 49777 fucofulem2 50117 thincpropd 50248 functhinclem1 50250 fulltermc 50317 postc 50375 islmd 50471 iscmd 50472 |
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