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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 473 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵) → (𝜓 ↔ 𝜒)) |
| 3 | 2 | ralbidva 3187 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 4 | 3 | ralbidva 3187 | 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 401 ∈ wcel 2147 ∀wral 3080 |
| 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 1945 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ral 3081 |
| This theorem is used by: disjxun 5104 reu3op 6310 opreu2reurex 6312 isocnv3 7360 isotr 7364 f1oweALT 8005 fnmpoovd 8120 pospropd 18525 tosso 18617 isipodrs 18737 mgmpropd 18855 mgmhmpropd 18913 sgrppropd 18946 mndpropd 18977 mhmpropd 19013 efgred 19989 cmnpropd 20032 rngpropd 20423 ringpropd 20546 isdomn3 20993 lmodprop2d 21226 lsspropd 21319 islmhm2 21340 lmhmpropd 21375 df2idl2crng 21604 islindf4 22171 assapropd 22206 scmatmats 22853 cpmatel2 23058 1elcpmat 23060 m2cpminvid2 23100 decpmataa0 23113 pmatcollpw2lem 23122 connsub 23766 hausdiag 23991 ist0-4 24075 ismet2 24679 txmetcnp 24893 txmetcn 24894 metuel2 24911 metucn 24917 isngp3 24944 nlmvscn 25033 isclmp 25445 isncvsngp 25497 ipcn 25594 iscfil2 25614 caucfil 25631 cfilresi 25643 ulmdvlem3 26756 cxpcn3 27103 tgjustf 28962 tgjustr 28963 tgcgr4 29021 perpcom 29215 brbtwn2 29510 colinearalglem2 29512 eengtrkg 29591 isarchi2 33813 opprlidlabs 34076 elmrsubrn 36451 nmulprop 37116 nmulcom 37120 nadddilem2 37147 nadddilem4 37149 isbnd3b 38910 iscvlat2N 40572 ishlat3N 40602 gicabl 44292 lindslinindsimp2 49778 joindm3 50286 meetdm3 50288 fucofulem2 50636 thincpropd 50780 functhinclem1 50782 fulltermc 50849 postc 50910 islmd 51051 iscmd 51052 |
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