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Related theorems GIF version |
| Description: Define the epsilon relation. Similar to Definition 6.22 of [TakeutiZaring] p. 30. |
| Ref | Expression |
|---|---|
| df-eprel | ⊢ E = {〈x, y〉∣x ∈ y} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cep 2056 | . 2 class E | |
| 2 | vx | . . . 4 set x | |
| 3 | vy | . . . 4 set y | |
| 4 | 2, 3 | wel 803 | . . 3 wff x ∈ y |
| 5 | 4, 2, 3 | copab 2055 | . 2 class {〈x, y〉∣x ∈ y} |
| 6 | 1, 5 | wceq 1091 | 1 wff E = {〈x, y〉∣x ∈ y} |
| Colors of variables: wff set class |
| This definition is referenced by: epelc 2123 rele 2501 |