主题:【原创】从零是不是自然数谈起 -- 代码ABC
共:💬9 🌺42
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There is no universal agreement about whether to include zero in the set of natural numbers: some define the natural numbers to be the positive integers {1, 2, 3, ...}, while for others the term designates the non-negative integers {0, 1, 2, 3, ...}. The former definition is the traditional one, with the latter definition first appearing in the 19th century.
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🙂【原创】从零是不是自然数谈起 40 代码ABC 字1807 2012-02-26 21:00:02
🙂看了一下维基,和你的说法很一致啊。
😜我参考了Wiki的内容 代码ABC 字0 2012-02-29 10:15:47
🙂"自然"这个词其实很不自然 1 假设 字385 2012-02-27 02:09:39
🙂我们上四年级的时候突然就改了。 chaolab 字36 2012-02-26 23:58:50
🙂那现在0到底算不算自然数?应该不算吧? 隔路山贼 字0 2012-02-27 00:13:05
🙂数学界有争议 代码ABC 字26 2012-02-27 00:53:57
🙂现在算啦?记得我上学时还不算......当然是八几年。 隔路山贼 字0 2012-02-27 01:59:15