Bernoulli多项式和Euler多项式的关系

本文给出了 Bernoulli- Euler数之间的关系和 Bernoulli- Euler多项式之间的关系 ,从而深化和补充了有关文献中的相关结果 .     

一类循环图中的Eulerian定向数

一般的图中Eulerian定向数的计数是#P-完全问题,但对于某些特殊图中的Eulerian定向数给出精确计数是完全有可能的.通过拆分解构的方法可以找到与一类循环图中Eulerian定向数有关的递推关系,从而给出该数的精确计数.前人的工作在于给出了一些近似估计.     

高阶多元Euler多项式和高阶多元Bernoulli多项式

本文给出了高阶多元Ｅｕｌｅｒ数和多项式与高阶多元Ｂｅｒｎｏｕｌｉ数和多项式的定义，讨论了它们的一些重要性质，得到了高阶多元Ｅｕｌｅｒ多项式（数）和高阶多元Ｂｅｒｎｏｕｌｉ多项式（数）的关系式·     

高阶Euler多项式的推广及其应用

利用Apostol的方法,推广了高阶Euler数和多项式,得到了它们分别用第二类Stirling数和Gauss超几何函数表示的公式,最后给出了一些相应的特殊情况和应用.     

高阶Bernoulli多项式和高阶Euler多项式的新计算公式

使用发生函数方法,利用两种第一类Stirling数给出高阶Bernoulli多项式和高阶Euler多项式的简捷计算公式.     

广义n阶Euler-Bernoulli多项式

本文得到了广义n阶Euler数和广义n阶Bernoulli数,广义n阶Euler多项式和广义n阶Bernoulli多项式的关系式。     

关于Lucas多项式平方和的恒等式

利用广义Lucas多项式L n(x,y)的性质,通过构造组合和式T n(x,y;tx2),结合Bernoulli多项式的生成函数和Euler多项式的生成函数,采用分析学中的方法,得到两个有关L2n(x,y)的恒等式.并从这一结果出发,得到了两个推论,推广了相关文献的一些结果.     

算子多项式的若干性质

本文讨论了多元算子多项式的几种保正号的性质，并由此得出关于正规算子不等式的转化定理。     

广义中心阶乘数与高阶Nrlund Euler-Bernoulli多项式

本文讨论了广义中心阶乘数的性质,刻画了广义中心阶乘数与高阶Ｅｕｌｅｒ－Ｂｅｒｎｏｕｌｌｉ数和多项式的关系,建立了一些包含 Ｎｏｒｌｕｎｄ Ｅｕｌｅｒ－Ｂｅｒｎｏｕｌｌｉ多项式恒等式,推广了 Ｄｉｌｃｈｅｒ Ｋ．［１］,Ｚｈａｎｇ Ｗｅｎｐｅｎｇ［２］和 Ｚｅｉｔｌｉｎ　Ｄａｖｉｄ［３］的结果．     

广义中心阶乘数与高阶Nrlund Euler-Bernoulli多项式

本文讨论了广义中心阶乘数的性质,刻画了广义中心阶乘数与高阶Ｅｕｌｅｒ－Ｂｅｒｎｏｕｌｌｉ数和多项式的关系,建立了一些包含 Ｎｏｒｌｕｎｄ Ｅｕｌｅｒ－Ｂｅｒｎｏｕｌｌｉ多项式恒等式,推广了 Ｄｉｌｃｈｅｒ Ｋ．［１］,Ｚｈａｎｇ Ｗｅｎｐｅｎｇ［２］和 Ｚｅｉｔｌｉｎ　Ｄａｖｉｄ［３］的结果．     

Euler多项式的若干对称恒等式

Using the generating functions, we prove some symmetry identities for the Euler polynomials and higher order Euler polynomials, which generalize the multiplication theorem for the Euler polynomials. Also we obtain some relations between the Bernoulli polynomials, Euler polynomials, power sum, alternating sum and Genocchi numbers.     

Some Combinatorial Properties of Schubert Polynomials

Schubert polynomials were introduced by Bernstein et al. and Demazure, and were extensively developed by Lascoux, Schützenberger, Macdonald, and others. We give an explicit combinatorial interpretation of the Schubert polynomial in terms of the reduced decompositions of the permutation w. Using this result, a variation of Schensted's correspondence due to Edelman and Greene allows one to associate in a natural way a certain set of tableaux with w, each tableau contributing a single term to . This correspondence leads to many problems and conjectures, whose interrelation is investigated. In Section 2 we consider permutations with no decreasing subsequence of length three (or 321-avoiding permutations). We show for such permutations that is a flag skew Schur function. In Section 3 we use this result to obtain some interesting properties of the rational function , where denotes a skew Schur function.Sara C. Billey: Supported by the National Physical Science Consortium. William Jockusch: Supported by an NSF Graduate Fellowship. Richard P. Stanley: Partially supported by NSF grants DMS-8901834 and DMS-9206374     

The Eulerian distribution on involutions is indeed unimodal

Let In,k (respectively Jn,k) be the number of involutions (respectively fixed-point free involutions) of {1,…,n} with k descents. Motivated by Brenti's conjecture which states that the sequence In,0,In,1,…,In,n−1 is log-concave, we prove that the two sequences In,k and J2n,k are unimodal in k, for all n. Furthermore, we conjecture that there are nonnegative integers an,k such that

     

单纯形上Bernstein多项式的一些性质

设Ｂ_m（ｆ，·）为函数ｆ在ｄ维单纯形σ上的ｎ阶Ｂｅｒｎｓｔｅｉｎ多项式，本文对ｆ∈Ｃ^ｒ（σ）及ｆ∈Ｃ^r+2（σ）给出了ｆ的各阶编导数用Ｂ_n（ｆ，·）相应偏导数逼近的误差估计．同时也考虑了整系数Ｂｅｒｎｓｔｅｉｎ多项式的Ｌ_p模估计     

Explicit Formulae for Some Kazhdan-Lusztig Polynomials

We consider the Kazhdan-Lusztig polynomials P _u,v (q) indexed by permutations u, v having particular forms with regard to their monotonicity patterns. The main results are the following. First we obtain a simplified recurrence relation satisfied by P _u,v (q) when the maximum value of v S_n occurs in position n – 2 or n – 1. As a corollary we obtain the explicit expression for P_{e,3 4 ... n 1 2}(q) (where e denotes the identity permutation), as a q-analogue of the Fibonacci number. This establishes a conjecture due to M. Haiman. Second, we obtain an explicit expression for P_{e, 3 4 ... (n – 2) n (n – 1) 1 2}(q). Our proofs rely on the recurrence relation satisfied by the Kazhdan-Lusztig polynomials when the indexing permutations are of the form under consideration, and on the fact that these classes of permutations lend themselves to the use of induction. We present several conjectures regarding the expression for P _u,v (q) under hypotheses similar to those of the main results.     

Morgan-Voyce多项式的一些新性质

本文证明了Morgan-Voyce多项式的零点在闭区间$[-4,0]$上是稠密的.本文也证明了Morgan-Voyce多项式系数的分布是渐近正态的,以及它的系数矩阵是全正的.     

一类矩阵多项式秩的恒等式

得到了一类矩阵多项式秩的恒等式,改进和推广了近期的一些结果.     

Explicit formulas and recurrence relations for higher order Eulerian polynomials

In the paper, the authors present explicit formulas, nonlinear ordinary differential equations, and recurrence relations for Eulerian polynomials, higher order Eulerian polynomials, and their generating functions in terms of the Stirling numbers of the second kind.     

光滑Jordan.曲线上一类极值多项式的逼近性质

关于Bieberbach多项式的逼近性质已有许多精彩结果,然而Jordan曲线上极值多项式的逼近性质却很少被考察.本文得到了C^1+α光滑Jordan曲线上一类极值多项式的一些逼近结果.