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Mirrors > Home > MPE Home > Th. List > Mathboxes > df-goel | Structured version Visualization version GIF version |
Description: Define the Godel-set of membership. Here the arguments 𝑥 = ⟨𝑁, 𝑃⟩ correspond to vN and vP , so (∅∈𝑔1o) actually means v0 ∈ v1 , not 0 ∈ 1. (Contributed by Mario Carneiro, 14-Jul-2013.) |
Ref | Expression |
---|---|
df-goel | ⊢ ∈𝑔 = (𝑥 ∈ (ω × ω) ↦ ⟨∅, 𝑥⟩) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cgoe 34319 | . 2 class ∈𝑔 | |
2 | vx | . . 3 setvar 𝑥 | |
3 | com 7854 | . . . 4 class ω | |
4 | 3, 3 | cxp 5674 | . . 3 class (ω × ω) |
5 | c0 4322 | . . . 4 class ∅ | |
6 | 2 | cv 1540 | . . . 4 class 𝑥 |
7 | 5, 6 | cop 4634 | . . 3 class ⟨∅, 𝑥⟩ |
8 | 2, 4, 7 | cmpt 5231 | . 2 class (𝑥 ∈ (ω × ω) ↦ ⟨∅, 𝑥⟩) |
9 | 1, 8 | wceq 1541 | 1 wff ∈𝑔 = (𝑥 ∈ (ω × ω) ↦ ⟨∅, 𝑥⟩) |
Colors of variables: wff setvar class |
This definition is referenced by: goel 34333 |
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