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关于确定抛物型方程两个参量的一类反问题的唯一性定理(Ⅱ)
The Uniquenese Theorem on the Inverse Problem of Determining Two Unknown Parameters in a Parabolic Equation
【摘要】 关于如下抛物型问题(1)—(4): 1979年,A·Pierce[1]在f(x,t)=u0(x)=h0(t)=0的假设下,据已知观测值研究了方程(1)中未知系数a(x)的唯一性问题。这里针对f(x,t)=f(x)g(t),u0(x)=g0(t)=h0(t)=0的情形,就方程(1)中未知函数组{a(x),f(x)}这一类反问题,给出了解的唯一性定理。在证明过程中,我们应用了Gel’fand—Levitan理论。
【Abstract】 In 1979, from the known observed-values Alan Pierce[1] discussed the uniqueness of the unknown coefficient a(x) in Equation (1) of the following parabolic equations under the condition of f(x,t)=u0(x)=h0(t)=0:In this paper, the uniqueness theorem on the inverse problem of determining the unknown functions {a(x), f(x)} in Equation (1) under the condition of f(x,t)=f(x)g(t) and u0(x)=g0(t)=h0(t)=O is presented. When the theorem is prayed, the Gel’fand-Levitan theory is used.
【关键词】 偏微分方程;
反问题;
Gel’fand—Ⅰ evitan理论;
【Key words】 Partial differention equatial; inverse problem; Gel’fand-Levitan theory.;
【Key words】 Partial differention equatial; inverse problem; Gel’fand-Levitan theory.;
【基金】 地震科学联合基金
- 【文献出处】 哈尔滨工业大学学报 ,Journal of Harbin Institute of Technology , 编辑部邮箱 ,1988年04期
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