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微分算子扰动问题的值域研究(英文)
On the Range of the Second-Order Differential Operator with Bounded Perturbations
【摘要】 本文研究作用在C2周期函数空间上的微分算子u→u″+g(u) ,其中g(u)为连续有界函数.我们将证明上述微分算子的值域限制在周期函数空间的“超曲面”中.
【Abstract】 In this paper we will study the differential operator u → u ″+g (u) which acts on the space of C~ 2 periodic functions , where g (u) is a continuous bounded function which is complementary to the Landesman-Lazer case . It will be proved that the range of the differential operator above is a ’twisted’ strip in the space of periodic functions.
【关键词】 值域;
微分算子;
周期解;
上下解方法;
【Key words】 Range; Differential operator; Periodic solution; Alternative method; Upper-lower solution method;
【Key words】 Range; Differential operator; Periodic solution; Alternative method; Upper-lower solution method;
【基金】 Supported by the NNSFC (10325102) ;TRAPOYT-M.O.E.(2001) and the National 973Project (G1999075108) of China
- 【文献出处】 应用数学 ,Mathematica Applicata , 编辑部邮箱 ,2006年03期
- 【分类号】O175.3
- 【下载频次】29