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| Mirrors > Home > MPE Home > Th. List > 1ex | Structured version Visualization version GIF version | ||
| Description: One is a set. (Contributed by David A. Wheeler, 7-Jul-2016.) |
| Ref | Expression |
|---|---|
| 1ex | ⊢ 1 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11213 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | 1 | elexi 3503 | 1 ⊢ 1 ∈ V |
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