摘要
在L2(-∞,∞)上具有周期实系数的Sturm-Liouville微分算子的谱只有连续谱,分布在实轴上;而周期复系数的Sturm-Liouville微分算子的谱也只有连续谱.本文主要讨论它的谱在复平面上的分布情况,得到了它的谱集或是空集,或是全平面,或是一些弧段.
The Sturm-Liouville differential operators with real periodic coefficients have only continuous spectra on Hilbert space L2 (-∞,∞) ,which distribute on the real axis,and the Sturm- Liouville differential operators with complex periodic coefficients have only continuous spectra on Hilbert space L2 (- ∞,∞) too. The distribution of the spectra in the complex plane is studied. The set of the spactra is either of a numerber of analytic arcs,or fills the whole plane,or is void.
出处
《内蒙古大学学报(自然科学版)》
CAS
CSCD
北大核心
2013年第3期254-260,共7页
Journal of Inner Mongolia University:Natural Science Edition
基金
国家自然科学基金资助项目(11171295)
关键词
二阶微分算子
J-自伴
连续谱
周期系数
条件稳定集
弧
second-order differential operator J- selfadjoint continuous spectrum periodic coef-ficient condition stable interval arc