By using the special test function, we discuss the establishing of conservation law of the first boundary value problem of infiltration.
运用取特殊检验函数的方法，建立了渗流方程第一边值问题解的守恒律。
In this paper, by using the fixed point index method, the authors discussed the periodic boundary value problem of first order differential systems.
摘要利用锥上的不动点指数研究了一阶非线性常微分方程组的周期边值问题。
By using the fixed point theorem on cone, this paper studies the existence of positive solutions for first order periodic boundary value problem with impulses.
利用锥上的不动点定理讨论了一阶脉冲微分方程周期边值问题的正解的存在性。
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