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Description: One-half is a complex number. (Contributed by David A. Wheeler, 8-Dec-2018)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | halfcn | ⊢ ( 1 / 2 ) ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn | ⊢ 2 ∈ ℂ | |
| 2 | 2ne0 | ⊢ 2 ≠ 0 | |
| 3 | 1 2 | reccli | ⊢ ( 1 / 2 ) ∈ ℂ |