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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 10943 seqcaopr2g 10944 wrd2ind 11509 addcn2 12092 mulcn2 12094 sgrp1 13775 ismhm 13817 mhmex 13818 issubm 13828 isnsg 14054 nmznsg 14065 isghm 14095 iscmn 14145 ring1 14413 opprsubrngg 14568 issubrg3 14604 islmod 14676 lmodlema 14677 lsssetm 14742 islssmd 14745 islidlm 14865 ispsmet 15473 ismet 15494 isxmet 15495 addcncntoplem 15711 elcncf 15723 mpodvdsmulf1o 16185 |
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