實數集和直線（點的集合）是等價的，所以直線也叫數軸。實數的公理化是實分析的基礎。

來源: QualityWithoutName 於 2023-12-21 10:38:57 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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