高阶(F,η)-不变凸性下的多目标分式规划的最优性条件

定义了一类新的广义高阶(F,η)-不变凸函数、高阶(F,η)-伪不变凸函数、高阶(F,η)-拟不变凸函数等,并用若干的实例验证了该函数的存在性.在新广义凸函数的约束下,给出并证明了一类具有该广义凸性的多目标分式规划问题有效解和弱有效解的最优性充分条件.     

非光滑半无限多目标优化的高阶KKT最优性充分条件

考虑了一类非光滑半无限多目标优化问题.利用高阶Studniarski下导数,得到了问题的严格局部有效解的高阶弱KKT最优性充分条件.进一步地,若假设该最优性条件中目标函数相关的乘子均大于零,则得到严格局部Borwein真有效解的高阶强KKT充分条件.这些充分条件适用于处理无任何凸性假设下的问题.     

多元函数的高阶微分中值定理

对凸区域DRn上的二次可微函数,本文采用构造“混合函数”的方法,将多元函数微分中值定理推广到了高阶的情形,并给出了应用示例.     

弱条件多函数含高阶导数的对称式柯西中值定理

利用行列式的性质,给出了多函数对称式含高阶导数的柯西中值定理,减弱了柯西中值定理的条件.     

完全对称函数的Schur凸性

定义了一完全对称函数并研究该称函数的Schur凸性,Schur乘性凸性及Schur调和凸性,作为应用探讨了与其相关的一些不等式.     

集值优化问题超有效解的高阶Mond-Weir对偶

在实赋范线性空间中利用锥方向高阶广义邻接导数研究带约束的集值优化在超有效解意义下的高阶Mond-Weir对偶问题.在广义锥-凸假设下,利用锥方向高阶广义邻接导数的性质借助凸集分离定理得到了强对偶定理.利用超有效点的标量化定理得到逆对偶定理.     

高阶变系数泛函方程解的振动性

讨论了高阶变系数泛函微分方程解的振动性,并给出了这类高阶变系数函数方程解的若干新振动准则.结果推广了目前已有的某些结果.并且给出了在差分方程中的应用.     

含有锥约束的多目标变分问题的广义对称对偶性

本文研究了一类含有锥约束多目标变分问题的广义对称对偶性.利用函数的(F,ρ)-不变凸性的条件,得出了多目标变分问题关于有效解的弱对偶定理、强对偶定理和逆对偶定理,将多目标变分问题的对称对偶性理论推广到含有锥约束的广义对称对偶性上来.     

一类广义凸函数及其等价刻画

引入了一个广义凸函数一高阶强Pre-invex函数,它是Guneer-Bhatia介绍的高阶强凸函数的一种推广.在此基础上,讨论并证明了高阶强Pre-invex函数的一些等价刻画,这些结论是Guneer-Bhatia给出结论的推广,扩大了凸函数的应用范围.     

截口上的奇异积分高阶交换子的加权估计

研究截口上的奇异积分高阶交换子Hbmf(x),利用截口F关于核的ki(x,y)估计,在一定假设下得到了Hbm的Sharp极大函数估计和加权弱(1,1)型估计.     

Decomposition of higher-order Wright-convex functions

In this paper we consider higher-order Wright-convex functions and prove that they are representable as the sum of a continuous higher-order convex function and a polynomial function.     

Higher-Order Duality in Nondifferentiable Multiobjective Programming

A new generalized class of higher-order (F, α, ρ, d)–type I functions is introduced, and a general Mond–Weir type higher-order dual is formulated for a nondifferentiable multiobjective programming problem. Based on the concepts introduced, various higher-order duality results are established. At the end, some special cases are also discussed.     

A higher-order moment method of the lattice Boltzmann model for the conservation law equation

In this paper, we proposed a higher-order moment method in the lattice Boltzmann model for the conservation law equation. In contrast to the lattice Bhatnagar–Gross–Krook (BGK) model, the higher-order moment method has a wide flexibility to select equilibrium distribution function. This method is based on so-called a series of partial differential equations obtained by using multi-scale technique and Chapman–Enskog expansion. According to Hirt’s heuristic stability theory, the stability of the scheme can be controlled by modulating some special moments to design the third-order dispersion term and the fourth-order dissipation term. As results, the conservation law equation is recovered with higher-order truncation error. The numerical examples show the higher-order moment method can be used to raise the accuracy of the truncation error of the lattice Boltzmann scheme for the conservation law equation.     

一类高阶双曲方程非平凡上解的不存在性

本文讨论与Caffarelli-Kohn-Nirenberg不等式相关的一类高阶双曲方程.在适当条件下,构造合适的检验函数并予以估计从而证明这类方程非平凡上解的不存在性.     

Identities of symmetry for higher-order Euler polynomials in three variables (II)

We derive twenty five basic identities of symmetry in three variables related to higher-order Euler polynomials and alternating power sums. This demonstrates that there are abundant identities of symmetry in three-variable case, in contrast to two-variable case, where there are only a few. These are all new, since there have been results only about identities of symmetry in two variables. The derivations of identities are based on the p-adic integral expression of the generating function for the higher-order Euler polynomials and the quotient of integrals that can be expressed as the exponential generating function for the alternating power sums.     

Higher-Order Efficiency Conditions Via Higher-Order Tangent Cones

This article presents higher-order necessary and sufficient efficiency conditions for multiobjective optimization problems involving cone-constraints and a set constraint with G\^ateaux differentiable functions via higher-order tangential cones.     

高阶半线性抛物型方程组的生命跨度

其中m,P,q>1．利用试验函数方法,首先推导一些积分不等式,然后对方程组爆破解的生命跨度 [0,T)给出估计．     

Deep Reduction of Darboux Transformation to a $3\times3$ Spectral Problem

The Darboux transformation of a 3 × 3 spectral problem which is associated with the higherorder nonlinear SchrSdinger equation is given. Some solutions of the higher-order nonlinear Schroedinger equation are provided by taking different “seeds“.     

Lyapunov-type inequalities for a class of higher-order linear differential equations

In this paper, we obtain some Lyapunov-type inequalities for a class of higher-order linear differential equations. The results of this paper generalize and improve some earlier results on this topic.     

Deformation of short composite beam using refined theories

High-order flexural theories for short laminated composite beams subjected to mechanical and thermal loading are presented. The formulation allows for warping of the cross-section of the beam and eliminates the need for using arbitrary shear correction coefficients as in other theories. Based on higher-order shear deformation theories, the governing equations are obtained using the principle of virtual work (PVW). The justification for use of higher-order shear deformation theories is established for short and composite beams where cross-sectional warping is predominant.