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Mirrors > Home > MPE Home > Th. List > recni | Structured version Visualization version GIF version |
Description: A real number is a complex number. (Contributed by NM, 1-Mar-1995.) |
Ref | Expression |
---|---|
recni.1 | ⊢ 𝐴 ∈ ℝ |
Ref | Expression |
---|---|
recni | ⊢ 𝐴 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-resscn 10912 | . 2 ⊢ ℝ ⊆ ℂ | |
2 | recni.1 | . 2 ⊢ 𝐴 ∈ ℝ | |
3 | 1, 2 | sselii 3922 | 1 ⊢ 𝐴 ∈ ℂ |
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