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 | ||
---|---|---|---|
Assertion | df-bnj13 | ⊢ ( 𝑅 Se 𝐴 ↔ ∀ 𝑥 ∈ 𝐴 pred ( 𝑥 , 𝐴 , 𝑅 ) ∈ V ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | cR | ⊢ 𝑅 | |
1 | cA | ⊢ 𝐴 | |
2 | 1 0 | w-bnj13 | ⊢ 𝑅 Se 𝐴 |
3 | vx | ⊢ 𝑥 | |
4 | 3 | cv | ⊢ 𝑥 |
5 | 1 0 4 | c-bnj14 | ⊢ pred ( 𝑥 , 𝐴 , 𝑅 ) |
6 | cvv | ⊢ V | |
7 | 5 6 | wcel | ⊢ pred ( 𝑥 , 𝐴 , 𝑅 ) ∈ V |
8 | 7 3 1 | wral | ⊢ ∀ 𝑥 ∈ 𝐴 pred ( 𝑥 , 𝐴 , 𝑅 ) ∈ V |
9 | 2 8 | wb | ⊢ ( 𝑅 Se 𝐴 ↔ ∀ 𝑥 ∈ 𝐴 pred ( 𝑥 , 𝐴 , 𝑅 ) ∈ V ) |