**Description:** A positive integer is a real number. (Contributed by NM, 18-Aug-1999)

Ref | Expression | ||
---|---|---|---|

Hypothesis | nnre.1 | $${\u22a2}{A}\in \mathbb{N}$$ | |

Assertion | nnrei | $${\u22a2}{A}\in \mathbb{R}$$ |

Step | Hyp | Ref | Expression |
---|---|---|---|

1 | nnre.1 | $${\u22a2}{A}\in \mathbb{N}$$ | |

2 | nnre | $${\u22a2}{A}\in \mathbb{N}\to {A}\in \mathbb{R}$$ | |

3 | 1 2 | ax-mp | $${\u22a2}{A}\in \mathbb{R}$$ |