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Jordan矩阵是一种具有良好性质的特殊形状的重要矩阵.本文利用矩阵运算、反序矩阵、矩阵相似关系及矩阵的秩,深化了Jordan矩阵的性质,并在此基础上给出了任意阶方阵与对称矩阵相似的构造性证明及利用矩阵的秩计算矩阵Jordan标准形的理论基础,最后总结了利用矩阵秩计算矩阵Jordan标准形的步骤并进一步讨论了矩阵多项式的Jordan标准形,旨在促进学生提高学习高等代数的能力. 相似文献
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邹本强 《重庆职业技术学院学报》2006,15(5):160-161
在高等代数中矩阵是研究问题很重要的工具,在讨论矩阵的性质时给出了矩阵特征值的定义,但对矩阵特征值的性质研究很少,对特殊矩阵的特征值性质的研究更少,而特殊矩阵的特征值对研究特殊矩阵有很重要的意义。我们在研究矩阵及学习有关数学知识时,经常要讨论一些特殊矩阵的性质。为此,本文围绕幂等矩阵、反幂等矩阵、对合矩阵、反对合矩阵、幂零矩阵、正交矩阵、对角矩阵、可逆矩阵等特殊矩阵给出了其主要性质并加以证明,为广大读者学习矩阵时提供参考。 相似文献
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在抽象代数的基础上,结合其他学科背景,提出了抽象矩阵的概念,给出了不同于数值矩阵的几种抽象矩阵,如格值矩阵、半环值矩阵、伪半环值矩阵,并介绍了其基本性质。 相似文献
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本文对所有2×2的广义对称矩阵、广义反对称矩阵、幂等矩阵、幂零矩阵的内部结构作了细致的刻画．对所有秩为1的广义对称矩阵、广义反对称矩阵、幂等矩阵,幂零矩阵作了进一步探讨．并且对这四类矩阵相互之间的关系作了进一步的探讨． 相似文献
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将酉交矩阵的概念进行了推广，引入列（行）酉交矩阵及亚酉交矩阵、强亚酉交矩阵的概念，并讨论了它们的性质。 相似文献
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给出了一类以主子式定义的P_矩阵、N_矩阵、almostP_矩阵以及almostN_矩阵的特征。 相似文献
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在周期矩阵、弱周期矩阵的一般判定方法的基础上,给出了实对称矩阵和实反对称矩阵为周期矩阵、弱周期矩阵的简易判定方法. 相似文献
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曾京玲 《渭南师范学院学报》2003,18(Z2):28-29
通过对几类典型问题的研究分析,得出了有关伴随矩阵、伴随矩阵的秩、伴随矩阵的逆、伴随矩阵的转置、伴随矩阵的特征值等的重要结论.利用这些重要结论,我们可使一些相关伴随矩阵的计算和证明过程由繁琐变得相对简短. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献