共查询到20条相似文献,搜索用时 109 毫秒
1.
梁洪亮 《数学的实践与认识》2005,35(8):216-219
函数的微分运算化积分运算容易,把积分运算化为微分运算这是一大难题.利用微分算子方法可以把某些积分运算化为微分运算,且使形如∫f(x)eαxsinβxdx,∫f(x)eαxcosβxdx的积分运算简便、快捷. 相似文献
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Nassrallah-Rahman积分的一个新证明 总被引:2,自引:0,他引:2
应用关于q-微分算子的Leibniz公式证明了关于q-微分算子的两个恒等式.利用这些恒等式及q-级数的一些求和公式给出了Nasralah-Rahman积分的一个新证明,进而给出了关于q-级数8Φ7的积分表示的一个简易推导 相似文献
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利用微分算子级数法 ,将若干类广义积分及变上限函数的积分问题化为微分运算 ,介绍它们转换的条件、公式及实例 . 相似文献
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指出了微分算子方法的缺陷,结果表明:它不能真正解决不定积分的快捷计算问题,有时甚至不如经典算法方便. 相似文献
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双参数有限q指数算子及其应用 总被引:1,自引:0,他引:1
本文构造两个双参数有限q指数算子,得到了几个算子恒等式;应用这些算子恒等式到著名的q-Chu-Vandermonde求和恒等式,求导了若干奇异的q-级数恒等式,包含著名的Jackson恒等式的一个推广. 相似文献
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通过求解一个偏微分方程,得到了若干微分算子恒等式.利用这些恒等式,很自然地推出了关于Hermite多项式的一些著名结果. 相似文献
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线性微分方程的微分算子级数解法 总被引:15,自引:0,他引:15
介绍了微分算子级数法及其求解线性常微分方程通解、特解的原理、方法和实例.这个方法和其它解法的差别,在于不借助其它学科知识的启示,直接通过方程中微分算子的运算求出方程的特解或通解. 相似文献
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本文研究广义q-阶正交模糊混合几何平均算子及其在多属性决策中的应用.基于q-阶正交模糊集的隶属度空间大于直觉模糊集与毕达哥拉斯模糊集的特点,在q-阶正交模糊环境下,将算子自身的权重与位置权重相结合,定义了广义q-阶正交模糊混合几何平均算子.提出基于广义q-阶正交模糊混合几何平均算子的多属性决策方法,并通过选取最优拍摄地... 相似文献
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J—自共轭微分算子谱的定性分析 总被引:6,自引:0,他引:6
本文对J-自共轭微分算子谱理论研究情况做一些概要性的介绍,第一部分简要回顾了J-自共轭微分算子理论研究的发展过程,第二,三部分介绍了J-自共轭微分算子的本质谱和离散谱定性分析的主要方法和结论;第四部分扼要叙述J-自共轭微分算子其它方面的一些工作,以及J-自共轭微分算子谱理论研究中尚待解决的问题。 相似文献
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The one-dimensional q-differential transformation was introduced in [8] for solving the ordinary q-differential equations. Here, we present the definition and operation of the two-dimensional q-differential transform. A distinctive feature of the q-differential transform is its ability to solve linear and nonlinear partial q-differential equations. 相似文献
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《Integral Transforms and Special Functions》2012,23(12):923-937
In this study, transformation operators, some properties of kernels and properties of spectral characteristics are studied for Sturm–Liouville operators with the Coulomb potential which have discontinuity conditions inside a finite interval. 相似文献
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We establish some necessary and sufficient conditions for an operator in the space of square summable functions to be representable as a sum of multiplication by a bounded function and an integral operator. 相似文献
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R. Oinarov 《Siberian Mathematical Journal》2007,48(5):884-896
We introduce some nested classes of Volterra type integral operators. For the operators of these classes we establish criteria for boundedness and compactness in Lebesgue spaces. 相似文献
15.
Farrukh Mukhamedov Otabek Khakimov Ahmad Fadillah Embong 《Mathematical Methods in the Applied Sciences》2020,43(15):9102-9118
In the present paper, we consider integral equations, which are associated with nonlinear Markov operators acting on an infinite-dimensional space. The solvability of these equations is examined by investigating nonlinear Markov operators. Notions of orthogonal preserving and surjective nonlinear Markov operators defined on infinite dimension are introduced, and their relations are studied, which will be used to prove the main results. We show that orthogonal preserving nonlinear Markov operators are not necessarily satisfied surjective property (unlike finite case). Thus, sufficient conditions for the operators to be surjective are described. Using these notions and results, we prove the solvability of Hammerstein equations in terms of surjective nonlinear Markov operators. 相似文献
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In this note p(D) = Dm+ b1Dm 1+···+ bmis a polynomial Dirac operator in R~n, where D =nj=1ej xjis a standard Dirac operator in Rn, bjare the complex constant coefficients. In this note we discuss all decompositions of p(D) according to its coefficients bj,and obtain the corresponding explicit Cauchy integral formulae of f which are the solution of p(D)f = 0. 相似文献
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利用微分算子及n阶常系数非齐次线性微分方程的特征方程根与系数的关系给出其特解的逐次积分形式,并由此给出自由项f(x)=Pm(x)eλx(其中Pm(x)为m次多项式)时特解的简单递推公式. 相似文献
18.
V. B. Korotkov 《Siberian Mathematical Journal》2005,46(5):857-862
We prove a criterion for nuclearity of a linear operator and establish the form of the greatest two-sided ideal of the set of all compact Akhiezer integral operators in L2 and the set of all Akhiezer integral operators in L2. 相似文献
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In this note, we deal with a $p$-adic Hilbert-type integral operator induced by a symmetric homogeneous kernel of degree $-1$ and obtain the expression of the norm of this operator. As applications, we establish some new $p$-adic Hilbert-type inequalities with best constant factors. 相似文献