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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 467 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵) → (𝜓 ↔ 𝜒)) |
| 3 | 2 | ralbidva 3158 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 4 | 3 | ralbidva 3158 | 1 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2114 ∀wral 3051 |
| 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 1912 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ral 3052 |
| This theorem is referenced by: disjxun 5083 reu3op 6256 opreu2reurex 6258 isocnv3 7287 isotr 7291 f1oweALT 7925 fnmpoovd 8037 pospropd 18291 tosso 18383 isipodrs 18503 mgmpropd 18619 mgmhmpropd 18666 sgrppropd 18699 mndpropd 18727 mhmpropd 18760 efgred 19723 cmnpropd 19766 rngpropd 20155 ringpropd 20269 isdomn3 20692 lmodprop2d 20919 lsspropd 21012 islmhm2 21033 lmhmpropd 21068 islindf4 21818 assapropd 21851 scmatmats 22476 cpmatel2 22678 1elcpmat 22680 m2cpminvid2 22720 decpmataa0 22733 pmatcollpw2lem 22742 connsub 23386 hausdiag 23610 ist0-4 23694 ismet2 24298 txmetcnp 24512 txmetcn 24513 metuel2 24530 metucn 24536 isngp3 24563 nlmvscn 24652 isclmp 25064 isncvsngp 25116 ipcn 25213 iscfil2 25233 caucfil 25250 cfilresi 25262 ulmdvlem3 26367 cxpcn3 26712 tgjustf 28541 tgjustr 28542 tgcgr4 28599 perpcom 28781 brbtwn2 28974 colinearalglem2 28976 eengtrkg 29055 isarchi2 33246 opprlidlabs 33545 elmrsubrn 35702 isbnd3b 38106 iscvlat2N 39770 ishlat3N 39800 gicabl 43527 lindslinindsimp2 48939 joindm3 49444 meetdm3 49446 fucofulem2 49786 thincpropd 49917 functhinclem1 49919 fulltermc 49986 postc 50044 islmd 50140 iscmd 50141 |
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