On completeness of root functions of Sturm-Liouville problems with discontinuous boundary operators
On completeness of root functions of Sturm-Liouville problems with discontinuous boundary operators
复制标题
具有不连续边界算子的Sturm-Liouville问题根函数的完备性
DOI:
10.1016/j.jde.2013.07.029
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发表时间:
2013
影响因子:
2.4
通讯作者:
Tarkhanov
中科院分区:
文献类型:
--
作者:
Shlapunov;Tarkhanov
Abstract We consider a Sturm–Liouville boundary value problem in a bounded domain D of R n. By this is meant that the differential equation is given by a second order elliptic operator of divergent form in D and the boundary conditions are of Robin type on∂ D. The first order term of the boundary operator is the oblique derivative whose coefficients bear discontinuities of the first kind. Applying the method of weak perturbation of compact selfadjoint operators and the method of rays of minimal growth, we prove the completeness of root functions related to the boundary value problem in Lebesgue and Sobolev spaces of various types.
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