| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3081 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
| 4 | df-ral 3081 | . 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 2147 ∀wral 3080 |
| 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 3081 |
| This theorem is used by: ralbiia 3110 ralcom3 3116 raleqbii 3336 ralrab 3655 raldifb 4088 ralin 4149 raldifsni 4760 reusv2 5372 fnwe2lem3 8184 dfsup2 9473 iscard2 10094 acnnum 10170 dfac9 10254 dfacacn 10259 raluz2 13064 ralrp 13182 isprm4 16903 sdrgacs 21109 isnrm2 23731 ismbl 25902 ellimc3 26254 dchrelbas2 27621 onsis 28717 ons2ind 28718 h1dei 32209 iineq1i 37200 ixpeq1i 37204 |
| Copyright terms: Public domain | W3C validator |