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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 3183 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 4 | 3 | ralbidva 3183 | 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 2144 ∀wral 3076 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ral 3077 |
| This theorem is used by: disjxun 5100 reu3op 6295 opreu2reurex 6297 isocnv3 7340 isotr 7344 f1oweALT 7984 fnmpoovd 8098 pospropd 18499 tosso 18591 isipodrs 18711 mgmpropd 18829 mgmhmpropd 18887 sgrppropd 18920 mndpropd 18951 mhmpropd 18987 efgred 19962 cmnpropd 20005 rngpropd 20396 ringpropd 20519 isdomn3 20966 lmodprop2d 21199 lsspropd 21292 islmhm2 21313 lmhmpropd 21348 df2idl2crng 21577 islindf4 22144 assapropd 22179 scmatmats 22826 cpmatel2 23031 1elcpmat 23033 m2cpminvid2 23073 decpmataa0 23086 pmatcollpw2lem 23095 connsub 23739 hausdiag 23964 ist0-4 24048 ismet2 24652 txmetcnp 24866 txmetcn 24867 metuel2 24884 metucn 24890 isngp3 24917 nlmvscn 25006 isclmp 25418 isncvsngp 25470 ipcn 25567 iscfil2 25587 caucfil 25604 cfilresi 25616 ulmdvlem3 26729 cxpcn3 27076 tgjustf 28935 tgjustr 28936 tgcgr4 28994 perpcom 29188 brbtwn2 29483 colinearalglem2 29485 eengtrkg 29564 isarchi2 33746 opprlidlabs 34009 elmrsubrn 36285 nmulprop 36939 nmulcom 36943 nadddilem2 36970 nadddilem4 36972 isbnd3b 38720 iscvlat2N 40382 ishlat3N 40412 gicabl 44101 lindslinindsimp2 49575 joindm3 50077 meetdm3 50079 fucofulem2 50419 thincpropd 50550 functhinclem1 50552 fulltermc 50619 postc 50677 islmd 50773 iscmd 50774 |
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