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| Mirrors > Home > ILE Home > Th. List > 2ralbidv | GIF version | ||
| Description: Formula-building rule for restricted universal quantifiers (deduction form). (Contributed by NM, 28-Jan-2006.) (Revised by Szymon Jaroszewicz, 16-Mar-2007.) |
| Ref | Expression |
|---|---|
| 2ralbidv.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| 2ralbidv | ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ralbidv.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 2 | 1 | ralbidv 2550 | . 2 ⊢ (𝜑 → (∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑦 ∈ 𝐵 𝜒)) |
| 3 | 2 | ralbidv 2550 | 1 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜒)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 ∀wral 2528 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-4 1563 ax-17 1579 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-ral 2533 |
| This theorem is used by: cbvral3v 2801 poeq1 4444 soeq1 4460 isoeq1 6007 isoeq2 6008 isoeq3 6009 fnmpoovd 6451 smoeq 6561 xpf1o 7144 papeq1 7609 papcotr 7613 tapeq1 7618 elinp 7841 cauappcvgpr 8029 seq3caopr2 10930 seqcaopr2g 10931 wrd2ind 11495 addcn2 12076 mulcn2 12078 sgrp1 13726 ismhm 13768 mhmex 13769 issubm 13779 isnsg 14005 nmznsg 14016 isghm 14046 iscmn 14096 ring1 14364 opprsubrngg 14519 issubrg3 14555 islmod 14627 lmodlema 14628 lsssetm 14693 islssmd 14696 islidlm 14816 ispsmet 15424 ismet 15445 isxmet 15446 addcncntoplem 15662 elcncf 15674 mpodvdsmulf1o 16104 |
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