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本文给出行列式Vn-(x1,...,xn)的准确值,它是通常的Vandermode行列式计算公式的推广,以及它在理论上的一些重要应用. 相似文献
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“杨辉三角”中某些矩阵及其行列式的讨论 总被引:1,自引:0,他引:1
“杨辉三角”中某些矩阵及其行列式的讨论张之正,刘麦学(河南洛阳师范专科学校数学系471022)近来,许多作者对杨辉三角中的矩阵和行列式进行了讨论(如[1]─[5]),文[6]还给出了一类矩阵的逆矩阵的求法.本短文对这些矩阵及行列式做进一步的探讨.杨辉... 相似文献
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陈文华 《数学的实践与认识》2009,39(7)
求元素为1或-1的n阶行列式的最大值问题至今还没有得到解决,试图解决这个问题.首先把该问题转化为求元素为0或1的n-1阶行列式的最大值问题,接着给出了用取值较大的k-1阶行列式构造取值较大的k阶行列式的一种方法,并利用这种方法分别求出了元素为1或-1的3阶至8阶行列式的最大值. 相似文献
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本文对在单位圆盘U={z∈C:l│z│〈1}内解析且满足(1-λ)f(z)/z+λf^1(z)〈1+Az/1+Bz(-1≤B<A≤1;z∈U的函数f所对应的Hankel行列式│a2a4-a^23│,利用Toeplitz行列式的性质得到了其上界估计。 相似文献
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Peipei Tang 《Linear and Multilinear Algebra》2013,61(1):59-71
By employing divided differences, a unified approach to the evaluation of some determinant involving generalized factorials is proposed. Previous generalizations of the Vandermonde determinant and the Cauchy determinant due to Chu-Claudio, Chu-Wang-Zhang and Johnson are included as special cases of our unified treatment. 相似文献
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设R为非负交换整半环,用M_n(R)表示R上所有n×n矩阵构成的矩阵半环.令T是M_n(R)到其自身的线性变换,若T满足|T(X)|~+=|X|~+,■X∈M_n(R)(或|T(X)|~-=|X|~-,(?)X∈Mn(R)),称T为M_n(R)上保持正行列式(负行列式)的线性变换.刻画了n≥4时,M_n(R)上保持正行列式/负行列式的线性满射形式. 相似文献
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In 1851, Hesse claimed that the Hessian determinant of a homogeneous polynomial f vanishes identically if and only if the projective hypersurface V (f) is a cone. We follow the lines of the 1876 paper of Gordan and Noether to give a proof of Hesses claim for curves and surfaces. For higher dimensional hypersurfaces, the claim is wrong in general. We review the construction of polynomials with vanishing Hessian determinant but V (f) not being a cone. For three dimensional hypersurfaces the latter gives, again, the complete answer to the question asked in the title. 相似文献
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李敏 《高等学校计算数学学报》2005,(Z1)
1 行列式值的计算求行列式值常用的计算方法[1]多种多样,但对高阶行列式计算很少有通用的公式.在计算机普及的条件下,公式法显得尤为重要,下面给出一种简单易行的公式法--降阶算法,它充分利用了二阶行列式计算简单、可以心算的特点,逐次降阶而又不增子行列式计算的个数,减少了计算量又易于上机,从而提高了计算速度. 相似文献
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For the Kac-Moody superalgebra associated with the loop superalgebra with values in a finite-dimensional Lie superalgebra
g, we show what its quadratic Casimir element is equal to if the Casimir element for g is known (if g has an even invariant
supersymmetric bilinear form). The main tool is the Wick normal form of the even quadratic Casimir operator for the Kac-Moody
superalgebra associated with g; this Wick normal form is independently interesting. If g has an odd invariant supersymmetric
bilinear form, then we compute the cubic Casimir element. In addition to the simple Lie superalgebras g = g(A) with a Cartan
matrix A for which the Shapovalov determinant was known, we consider the Poisson Lie superalgebra poi(0|n) and the related
Kac-Moody superalgebra.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 156, No. 3, pp. 378–397, September, 2008. 相似文献
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Note on Rational Interpolants 总被引:1,自引:0,他引:1
Tan Jieqing 《大学数学》1993,(3)
<正> In this note we present a constructive proof of symmetrical determinantal formulas forthe numerator and denominator of an ordinary rational interpolant,consider the confluencecase and give new determinantal formulas of the rational interpolant by means of Lagrange'sbasis functions. 相似文献
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八元数矩阵的行列式及其性质 总被引:1,自引:0,他引:1
赋范的可除代数只有四种:实数R,复数C,四元数日和八元数O.由于八元数关于乘法非交换且非结合,如何对八元数矩阵定义行列式并使其具有较好的运算性质变得非常困难.最近,李兴民和黎丽根据"八元数自共轭矩阵的行列式应为实数"这一数学与物理上的需求,通过选择几个八元数乘积的次序和结合方式,首次给出了八元数行列式的定义.但是,与实数、复数以及四元数的相应的情形比较,如此定义的行列式,其所具备的运算性质较少.本文给出了一种新的八元数行列式的定义,它们具备了尽可能多的运算性质,同时使得"八元数自共轭矩阵的行列式为实数"不证自明. 相似文献
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Anastasios Simalarides. 《Mathematics of Computation》2002,71(237):415-427
Let be an even integer, . The resultant of the polynomials and is known as Wendt's determinant of order . We prove that among the prime divisors of only those which divide or can be larger than , where and is the th Lucas number, except when and . Using this estimate we derive criteria for the nonsolvability of Fermat's congruence.