1) Nonexistence of solutions
解的非存在性
2) nonexistence of nonconstant positive solution
非常数正解的不存在性
5) existence of solution
解的存在性
1.
the existence of solution is proved.
讨论具有衔接条件、等位面条件和边界条件的椭圆方程混合问题，应用变分方法，证明了解的存在性。
2.
The purpose of this paper is to study the existence of solution for the following differen- tial inclusion: x (t)∈F(t,x(t),t∈[0,T],x(0)=x_0.
在较弱的条件下,借助 Ekdlnd 变分原理,研究了下面的微分包含解的存在性:X'(t)∈F(t,x(1)),t∈〔O,T〕,x(0)=x0 (D
3.
By the definition of fixed projection operator,the employment of upper and lower solution method,giving defining methods of the existence of solution to multipoint resonance boundary value for dimker L=2,further more generalizing the results of literature.
通过定义适当的投影算子,利用上下解方法,给出了dim ker L=2时二阶多点共振边值问题解的存在性的判定方法,进一步推广了文献[1-5]中的结果。
6) existence of solutions
解的存在性
1.
Existence of Solutions of Nonlinear Two-Point Boundary Value Problems for 4Nth-order Nonlinear Differential Equation;
非线性4n阶常微分方程两点边值问题解的存在性
2.
Then,the theory of ordinary differential equations was employed to discuss a class of initial-value problems of impulsive differential equations with variable times,and some results of existence of solutions to it were established under relatively weaker conditions.
首先给出了脉冲微分方程初值问题的解与相对应的常微分方程初值问题的解之间的关系,然后利用常微分方程理论讨论了一类时变脉冲微分方程初值问题,并在相对较弱的条件下建立了解的存在性定理,所得解允许和某些Sk相遇多次,推广了相关问题的已有结果。
3.
The methods of up-lower solution is used to study the existence of solutions of nonlinear three point boundary value problems for nonlinear 4 nth order differential equation.
本文利用上-下解的方法,讨论了非线性4n阶常微分方程的非线性三点边值问题解的存在性。
补充资料：连续性与非连续性(见间断性与不间断性)
连续性与非连续性(见间断性与不间断性)
continuity and discontinuity
11an父ux泊g四f“山。麻以角g、.连续性与非连续性(c。nt，n琳t:nuity一)_见间断性与不间断性。and diseo红ti-
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条