| Metamath Proof Explorer |
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Related theorems GIF version |
| Description: A real number is a complex number. |
| Ref | Expression |
|---|---|
| recnt | ⊢ (A ∈ ℝ → A ∈ ℂ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axresscn 5280 | . 2 ⊢ ℝ ⊆ ℂ | |
| 2 | 1 | sseli 2068 | 1 ⊢ (A ∈ ℝ → A ∈ ℂ) |