非负整数
This article "非负整数" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:非负整数. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one. 脚本错误：没有“Message box”这个模块。 This article "非负整数" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:非负整数. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one. Template:Numbers 非負整數，就是數字前沒有加負號，亦指其絕對值等於其原數值。與正整數差一個數字。即為零，一個實数的平方必為非負整數。
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Template:数学小作品 This article "非负整数" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:非负整数. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.
