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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 7610 papcotr 7614 tapeq1 7619 elinp 7842 cauappcvgpr 8030 seq3caopr2 10945 seqcaopr2g 10946 wrd2ind 11511 addcn2 12095 mulcn2 12097 sgrp1 13779 ismhm 13821 mhmex 13822 issubm 13832 isnsg 14058 nmznsg 14069 isghm 14099 iscmn 14180 ring1 14448 opprsubrngg 14603 issubrg3 14639 islmod 14711 lmodlema 14712 lsssetm 14777 islssmd 14780 islidlm 14900 ispsmet 15515 ismet 15536 isxmet 15537 addcncntoplem 15753 elcncf 15765 mpodvdsmulf1o 16245 |
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