共查询到20条相似文献，搜索用时 46 毫秒
1.
给出相似变换和初等相似变换的定义,证明了任一n阶矩阵都可经一系列初等相似变换得到若当形矩阵,并介绍了用初等相似变换求若当矩阵及其相关过渡矩阵的方法。 相似文献
2.
3.
“变换思想”贯穿矩阵整章内容,从二阶矩阵与列向量的乘法到几种常见的平面变换,从矩阵的乘法、性质到矩阵的特征向量、特征值等,因此涉及相关矩阵问题的解决方法既要能用一般方法求解,更要善于从变换角度思考,而对于涉及常见变换矩阵问题,从变换角度入手往往更简捷． 相似文献
4.
本文从理论上讨论利用任意初等行列混合变换解系数矩阵为可逆矩阵的矩阵方程,任意初等行列混合变换解系数矩阵为一般m×n矩阵的矩阵方程,该方法系统完整. 相似文献
5.
呙林兵 《荆门职业技术学院学报》2011,(7):43-44,51
对Laplace变换在矩阵指数函数中的应用进行了研究,给出了用Laplace变换求解矩阵指数函数的方法,其在矩阵论的研究中具有十分重要的意义。 相似文献
6.
牛普选 《开封教育学院学报》1993,(2)
〔1〕文中定义了勾股数及勾股变换矩阵,并讨论了勾股数变换矩阵的一些性质。但文中有些结论不成立,如〔1〕文中所给勾股数变换矩阵的逆矩阵A~(-1)不满足勾股数变换矩阵的定义,但按文中定理应当是勾股数变换矩阵。再如,由文中的定理和例,可以证明矩阵是勾股数变换矩阵,但由定义,其不是勾股数变换矩阵。 相似文献
7.
本文根据逆矩阵的定义和性质,总结了利用定义、伴随矩阵、初等行列变换、混合初等行列变换、分块矩阵、哈密顿-凯莱（Hamilton-Cayley）定理和Gauss-Jordan定理求逆矩阵的方法. 相似文献
8.
运用初等变换与初等矩阵的关系、矩阵系数多项式的理论探讨相似变换矩阵集合的结构,并给出由两个已知的相似矩阵求它们的相似变换矩阵的方法. 相似文献
9.
10.
刘明贤 《河南广播电视大学学报》1996,(1)
矩阵方程的初等行变换解法刘明贤在现行线性代数教材中．解矩阵方程ＡＸ—Ｂ或ＸＡ—Ｂ，都是通过求矩阵Ａ的道的方法解出未知数矩阵Ｘ。这种方法不仅运算繁冗，而且当Ａ不是方阵时，还不能用此法求解。本文试图用初等行变换法（约定在施行变换过程中，不互换两行的位置）... 相似文献
11.
罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
12.
Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
13.
Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
14.
15.
16.
《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
17.
陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
18.
邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
19.
《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
20.
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