Pauli矩阵的性质与应用

通过Pauli矩阵基本数值指标及基本性质、矩阵函数、矩阵谱分解及矩阵张量积,研究Pauli矩阵的相关性质及在量子信息中的部分应用.深化了Pauli矩阵的性质,刻画了r·σ矩阵的性质,给出Hermite矩阵及密度矩阵的Bloch向量表示、获得Pauli矩阵函数和密度矩阵函数的有关结果.为纯态矩阵的判断、密度矩阵的距离度量...     

特殊矩阵的特征值性质

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。     

关于伴随矩阵性质的讨论

伴随矩阵在矩阵的运算和应用中起着非常重要的作用.伴随矩阵A*与矩阵A、矩阵A的逆矩阵A-1、矩阵A的转置矩阵A′、矩阵A′的行列式有着密切联系,伴随矩阵A*的行列式和秩也有其特殊性质.     

关于矩阵Jordan标准形应用及计算

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.     

反循环矩阵及其逆矩阵的讨论

反循环矩阵在编码理论、数理统计等学科中都有应用.讨论反循环矩阵类的一般性质以及反循环矩阵与循环矩阵的相似关系,并且反循环矩阵的逆矩阵一定存在且也是反循环矩阵,反循环矩阵类的这些性质将有助于进一步研究反循环矩阵的应用.     

介绍求循环矩阵与反循环矩阵的逆矩阵的一种简便方法

循环矩阵和反循环矩阵是一种特殊的矩阵,其逆矩阵可用一般方法求得.文章介绍求循环矩阵和反循环矩阵的逆矩阵的一种较为实用而简便的方法.     

反循环矩阵及广义反循环矩阵的若干性质

可表示为非奇异对角矩阵和反循环矩阵乘积的矩阵,我们称其为广义反循环矩阵。本文给出了单位矩阵与反循环矩阵的和矩阵以及单位矩阵与广义反循环矩阵的和矩阵为非奇异的充要条件,得到了这样和矩阵的相对增益阵列的显示表达式。     

一题多解 巧求逆矩阵

每一个二阶矩阵都对应着平面上的一个几何变换,有的变换存在逆变换,这种逆变换也对应着一个二阶矩阵,即逆矩阵,那么对于一个存在逆矩阵的二阶矩阵,如何求出它的逆矩阵?本文就逆矩阵的求解方法作一简述.1求一个二阶矩阵的逆矩阵     

关于友循环矩阵开平方的一种算法

给出了求友循环矩阵的平方根矩阵的一种算法,同时证明了n阶友循环矩阵的平方根矩阵中仍为友循环矩阵的矩阵个数为2n个。最后还给出了求友循环矩阵主平方根矩阵的算法。     

一类性质没有Hermitian矩阵优但比一般矩阵良的矩阵

受Hermitian矩阵启发,发现了一类新的矩阵,即适于条件A∈C^n×n,A~*=A⁴的矩阵.应用正规矩阵、矩阵的奇异值、特征值概念、德·费弗公式证明了适于这种条件的矩阵是正规矩阵,获得了这类矩阵的谱,奇异值分解式和逆矩阵表示式.举例并进行了这种矩阵在性质方面与Hermitian矩阵和一般矩阵的比较.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

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?     

Western and Eastern culture differences in commercial field

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.     

只要努力,不要后悔

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.     

浅谈移民问题

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.     

Sister Carrie, an Adherent of Desires

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.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

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.