Talk:實數
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呢篇文屬於數學主題，一個決心對數學類添加多啲色彩嘅主題。如想同班數學兄弟姊妹一齊添加多啲數學色彩，麻煩你去主題頭版睇睇，你亦都可以參與數學主題嘅討論同任務。 |
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實數嘅資訊曾經響2006年7月1日喺維基百科頭版嘅你知唔知？小節度出現過。 |  |
Please note:
1. |R is the only complete archimedian field. But any of its subfields is also archimedian.
2. The compatibility between the order and the multiplication operation:
-One has the notion of "positive real numbers" (those numbers which are > 0) -|R satisfies one further property: If a>b and c is positive, then ca>cb.
3. It is impossible to define an order in the field of complex numbers with all the mentioned properties.
(See Walter Rudin's book <<The Principles of Mathematical Analysis>> for reference.)(Hillgentleman)
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