共查询到20条相似文献,搜索用时 31 毫秒
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讨论了ω,q-Bernstein多项式的Voronovskaya-型公式及其收敛的饱和性.给出了当0
1[0,1]时ω,q-Bernstein多项式的Voronovskaya-型公式.如果0<ω,q<1,f∈C1[0,1]时ω,q-Bernstein多项式的Voronovskaya-型公式.如果0<ω,q<1,f∈C1[0,1],则ω,q-Bernstein多项式的收敛阶为o(q1[0,1],则ω,q-Bernstein多项式的收敛阶为o(qn)当且仅当((f(1-qn)当且仅当((f(1-q(k-1)-f(1-q)(k-1)-f(1-q)k))/((1-qk))/((1-q(k-1)-(1-q(k-1)-(1-qk)))=f'(1-qk)))=f'(1-qk),k=1,2,…还证明f如果f在[0,1]是凸的或者在(-ε,1+ε)(ε>0)解析,则ω,q-Bernstein多项式的收敛阶为o(qk),k=1,2,…还证明f如果f在[0,1]是凸的或者在(-ε,1+ε)(ε>0)解析,则ω,q-Bernstein多项式的收敛阶为o(qn)当且仅当f是线性函数. 相似文献
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本文对q-Bernstein多项式Bn(f,q,x)收敛于B∞(f,q,x)的加速问题进行研究,同时对其Boolean和迭代的收敛性问题进行考虑.采用精细估计,并应用光滑模理论等手段,得到相应的逼近速度估计.结果表明:q-Bernstein多项式在这两个问题上与传统Bernstein多项式有着类似的结果. 相似文献
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In this paper,we introduce a polynomial sequence in K[x],in which two neigh- bor polynomials satisfy a wonderful property.Using that,we give partial answer of an open problem:ifφ(x,y,z)=(f(x,y),g(x,y,z),z),which sends every linear coordinate to a coor- dinate,thenφis an automorphism of K[x,y,z].As a byproduct,we give an easy proof of the welt-known Jung's Theorem. 相似文献
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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. 相似文献
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L. Y. Zhu & L. Qiu 《分析论及其应用》2012,28(2):135-145
In the present paper, we obtain estimations of convergence rate derivatives of the q-Bernstein polynomials Bn (f, qn ; x) approximating to f ′ (x) asn →∞, which is a generalization of that relating the classical case qn = 1. On the other hand, we study the convergence properties of derivatives of the limit q-Bernstein operators B ∞ (f, q; x) as q → 1- . 相似文献
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Mathematical Notes - 相似文献
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给出了三对角行列式的几种算法,利用三对角行列式证明了两类Chebyshev多项式的几种显式. 相似文献
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首次研究了 Bernoulli多项式的积分多项式 .首先 ,给出这类多项式的定义和基本性质 ;其次 ,建立两类幂和多项式的相互关系 ;最后 ,介绍上述结果在求解自然数幂和公式方面的应用 . 相似文献
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A new family of trigonometric summation polynomials, Gn,r(f;θ), of Bernstein type is constructed. In contrast to other trigonometric summation polynomials, the convergence properties of the new polynomials are superior to others. It is proved that Gn,r(f;θ) converges to arbitrary continuous functions with period 2π uniformly on (-∞, ∞) as n→∞. In particular, Gn,r(f;θ) has the best convergence order, and its saturation order is 1/n2r 4. 相似文献
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研究了退化伯努利多项式与广义等幂和多项式的对称关系,获得了关于多个退化高阶伯努利多项式与广义等幂和多项式的若干对称关系. 相似文献
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Seon-Hong Kim 《Acta Appl Math》2002,73(3):275-284
Let A and B be monic polynomials of the same degree. Given some (or all) information about the individual polynomials A and B, in particular about their factorizations, what can be said about the factorization of their sum C=A+B? We survey results of Fell, Mason and others, and expand upon them. The famous ‘abc conjecture’ of number theory is one obvious motivation for this investigation. 相似文献
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We study trigonometric sums in finite fields
. The Weil estimate of such sums is well known:
, where f is a polynomial with coefficients from F(Q). We construct two classes of polynomials f,
, for which
attains the largest possible value and, in particular,
. 相似文献
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Acceleration procedures for matrix iterative methods 总被引:2,自引:0,他引:2
C. Brezinski 《Numerical Algorithms》2000,25(1-4):63-73
In this paper, several procedures for accelerating the convergence of an iterative method for solving a system of linear equations are proposed. They are based on projections and are closely related to the corresponding iterative projection methods for linear systems. 相似文献
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引入伴随多项式是为了从补图的角度研究色多形式,图的伴随多项式的极小根可用于判定色等价图.β(G)表示图G的伴随多项式的极小根.n表示n个顶点的单圈图的集合.分别确定了具有max{β(G)|G∈Ωn}和min{β(G)|G∈Ωn}的所有单圈图. 相似文献