查询词典 boundary value problem

Under the appropriate assumptions, the asymptotic solutions of the problem with different forms are obtained according to the multiple number of the root of some equation, which is satisfied by the boundary value of the reduced problem, by giving the general expressions for the coefficients of outer solution expansion and the corresponding boundary conditions.

在适当的假设下，通过给出外部解展开式系数及其对应边界条件的一般表达式，根据退化问题的边值作为某方程的根的重数，得到了此问题不同形式的渐近解。

For the first time, in [3] the authors discussed the inequalities of B-B and by using them the authors give a proof of the existence and uniqueness of the generalized solution for magnetostatic field problem with zero boundary value. By using the inequalities of B--H in, in[-5,6] the authors give a proof of the existence and uniqueness of the generalized solutions for 3-D magnetostatic field Neumann problem and 2-D magnetic field first boundary value initial problem.

前人已讨论了B—H间的几个基本不式，并由之证明了三维静磁场带零边值问题广义解的存在与唯一性，作者也曾利用给出的B—H间的不式证明了三维静磁场Neumann问题和二维时变场第一边值初值问题广义解的存在与唯一性。

The gap element method is proposed in the paper for two kinds of problems, which include contact problem and gap joint problem. Elasticity contact problem falls into the category of unknown boundary value problems. It follows that the contact area and contact conditions or states can never be determined without special mathematical analysis, which is a very difficult work. The boundary conditions of the contact surfaces are deduced.

文中给出了间隙元法在空间可动部件接触问题中的应用，推导了其几何边界条件和力学边界条件，利用虚功原理推导了含间隙元弹性接触问题的有限元方程式，给出了其数值解法的迭代步骤，并指出了利用间隙单元进行分析的特点。

In section 2, we study the existence of sign-changing solutions of some three-point boundary value problem by the cone theory and the fixed-point index theory.

本文利用不动点指数定理研究了如下两种二阶微分方程多点边值问题变号解的存在性，同时分别得到了一个正解和一个负解。

Firstly in§2.1, by applying the fixed point theorem the existence of positive solutions for second-order three-point boundary value problem is discussed.

第二节，运用不动点定理研究四阶两点边值问题正解的存在性。

A three-point boundary value problem for a semi-positone second-order differential equation is investigated.

研究了一类半正二阶非线性常微分方程的三点边值问题u +λf =0 ，u′(0 )=0 ，u(1 )=αu ，利用Krasnosel'skii不动点定理得到了正解存在的一个充分条

Existence Result for Semipositone Second-Order Three-Point Boundary Value Problem

利用不动点指数结合平移变换的方法，研究了一类四阶奇异半正边值问题，得到了其C~2[0，1]∩C~4(0，1)正解存在的一个新结果。

three-point boundary value problem,positive solution,cone

本文主要讨论四阶三点边值向题{U&'&'一f'，&('&+g'，&('&，'eo，''，Lu(0=au，u=0，aull一月u，，，(0)=0，7ull(1)+叙邢(1)~0，其中。0，在了，g同超线性，或一超线

This paper study some third-order three-point generalized right focal boundary value problem.

本文研究一类三阶三点广义右焦点边值问题。

And from this variational principle,it can derive the corresponding boundary value problem governing nonlinearly static analysis of Timoshenko beams.

在假定梁不可伸长的基础上，给出了描述几何非线性、物理线性的大挠度Timoshenko梁的变分原理，由此导出了大挠度Timoshenko梁平面静动力学分析的边值问题。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。