By using the weak maximum principle, the uniqueness and stability of the solution of water vapour equation with the first, second and third boundary-value problems were proven.
利用该弱极大值原理，证明了对于第一类、第二类和第三类边值问题，水汽方程解的唯一性和稳定性。
In this paper the "cover layer" phenomenon of solution for a class of singularly perturbed boundary value problems of third order semilinear equation is revealed.
本文揭示了一类三阶半线性方程奇摄动边值问题解的“套层”现象。
According to the principle, potential coefficients can be obtained directly in solving the mixed boundary value problems of first, second and third type.
根据这一原理可解第一、第二和第三边值问题的混合边值问题直接求得位系数。
We show existence results for multiple sign-changing solution for third-order two- point boundary value problems by using the fixed point index and the topologic degree theory.
主要研究一类三阶两点边值问题变号解的存在性和多重性，利用不动点指数和拓扑度理论等得到了新的结论。
In this paper we discussed the existence and uniqueness theorems for third-order boundary value problems, using the method of upper and lower solutions.
本文利用上、下解方法证明了两类三阶边值问题解的存在性和唯一性。
In this paper we discussed the existence and uniqueness theorems for third-order boundary value problems, using the method of upper and lower solutions.
本文利用上、下解方法证明了两类三阶边值问题解的存在性和唯一性。
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