Geometric aspects of SturmβLiouville pro
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Xifang Cao; Qingkai Kong; Hongyou Wu; Anton Zettl
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Article
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2007
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Elsevier Science
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English
β 254 KB
For a given regular Sturm-Liouville equation and any natural number n, we explicitly describe the level surfaces of the nth eigenvalue of the equation, regarded as a function on the space of self-adjoint boundary conditions. The description of each level surface uses only a particular value of the t