| 纠正一道习题的解答 |
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| 引用本文： | 郭效江,朱丹,曹华林.纠正一道习题的解答[J].大学数学,2012,28(2):145-147. |
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| 作者姓名： | 郭效江 朱丹 曹华林 |
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| 作者单位： | 海军航空工程学院青岛分院航空工程基础教研室,山东青岛,266041 |
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| 摘 要： | 针对《近世代数习题解》中一道习题的错解,深入分析了错误的原因,利用一个概率问题的解答给出了正确的解答,并得到了第二类Stirling数的解析表达式.
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| 关 键 词： | 映射 满射 一般加法公式 第二类Stirling数 |
The Correction of an Exercise＇s Solution |
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| GUO Xiao-jiang,ZHU Dan,CAO Hua-lin.The Correction of an Exercise＇s Solution[J].College Mathematics,2012,28(2):145-147. |
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| Authors: | GUO Xiao-jiang ZHU Dan CAO Hua-lin |
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| Institution: | (Engineering Foundation Staff Room,Naval Aeronautical Engineering Academy Qingdao Branch,Qingdao 266041,China) |
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| Abstract: | The paper presents a detailed analysis of an error occurred in an exercise of The Exercise Collection of Modern Algebra.With the help of the solution to a probability question,we give the correction.An analytic expression about Stirling numbers of the second kind is also incorporated. |
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| Keywords: | mapping surjection general additive formula Stirling numbers of the second kind |
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