|   | Mathbox for Jonathan Ben-Naim | < Previous  
      Next > Nearby theorems | |
| Mirrors > Home > MPE Home > Th. List > Mathboxes > df-bnj13 | Structured version Visualization version GIF version | ||
| Description: Define the following predicate: 𝑅 is set-like on 𝐴. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.) | 
| Ref | Expression | 
|---|---|
| df-bnj13 | ⊢ (𝑅 Se 𝐴 ↔ ∀𝑥 ∈ 𝐴 pred(𝑥, 𝐴, 𝑅) ∈ V) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | cA | . . 3 class 𝐴 | |
| 2 | cR | . . 3 class 𝑅 | |
| 3 | 1, 2 | w-bnj13 34704 | . 2 wff 𝑅 Se 𝐴 | 
| 4 | vx | . . . . . 6 setvar 𝑥 | |
| 5 | 4 | cv 1539 | . . . . 5 class 𝑥 | 
| 6 | 1, 2, 5 | c-bnj14 34702 | . . . 4 class pred(𝑥, 𝐴, 𝑅) | 
| 7 | cvv 3480 | . . . 4 class V | |
| 8 | 6, 7 | wcel 2108 | . . 3 wff pred(𝑥, 𝐴, 𝑅) ∈ V | 
| 9 | 8, 4, 1 | wral 3061 | . 2 wff ∀𝑥 ∈ 𝐴 pred(𝑥, 𝐴, 𝑅) ∈ V | 
| 10 | 3, 9 | wb 206 | 1 wff (𝑅 Se 𝐴 ↔ ∀𝑥 ∈ 𝐴 pred(𝑥, 𝐴, 𝑅) ∈ V) | 
| Colors of variables: wff setvar class | 
| This definition is referenced by: bnj93 34877 bnj1489 35070 | 
| Copyright terms: Public domain | W3C validator |