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| Mirrors > Home > MPE Home > Th. List > ralbii2 | Structured version Visualization version GIF version | ||
| Description: Inference adding different restricted universal quantifiers to each side of an equivalence. (Contributed by NM, 15-Aug-2005.) |
| Ref | Expression |
|---|---|
| ralbii2.1 | ⊢ ((𝑥 ∈ 𝐴 → 𝜑) ↔ (𝑥 ∈ 𝐵 → 𝜓)) |
| Ref | Expression |
|---|---|
| ralbii2 | ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥 ∈ 𝐵 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ralbii2.1 | . . 3 ⊢ ((𝑥 ∈ 𝐴 → 𝜑) ↔ (𝑥 ∈ 𝐵 → 𝜓)) | |
| 2 | 1 | albii 1852 | . 2 ⊢ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) ↔ ∀𝑥(𝑥 ∈ 𝐵 → 𝜓)) |
| 3 | df-ral 3077 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
| 4 | df-ral 3077 | . 2 ⊢ (∀𝑥 ∈ 𝐵 𝜓 ↔ ∀𝑥(𝑥 ∈ 𝐵 → 𝜓)) | |
| 5 | 2, 3, 4 | 3bitr4i 306 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∀wal 1568 ∈ wcel 2145 ∀wral 3076 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 |
| This proof depends on definitions: df-bi 210 df-ral 3077 |
| This theorem is used by: ralbiia 3106 ralcom3 3112 raleqbii 3332 ralrab 3652 raldifb 4096 ralin 4195 raldifsni 4758 reusv2 5368 dfsup2 9414 iscard2 9981 acnnum 10055 dfac9 10139 dfacacn 10144 raluz2 12946 ralrp 13064 isprm4 16774 sdrgacs 20967 isnrm2 23583 ismbl 25754 ellimc3 26106 dchrelbas2 27473 onsis 28539 ons2ind 28540 h1dei 32031 iineq1i 36816 ixpeq1i 36820 fnwe2lem2 43892 |
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