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- W2088882321 abstract "Abstract We consider Sturm–Liouville operators in the half axis generated by shifts of the potential and prove that Lebesgue measure is equivalent to a measure defined as an average of spectral measures which correspond to these operators. This is then used to obtain results on stability of spectral types under change of parameters such as boundary conditions, local perturbations, and shifts. In particular if for a set of shifts of positive measure the corresponding operators have α-singular, singular continuous and (or) point spectrum in a fixed interval, then this set of shifts has to be unbounded. Moreover, there are large sets of boundary conditions and local perturbations for which the corresponding operators enjoy the same property. Keywords: Sturm–Liouville operatorSpectral measureSingular spectrumShifted potentials34L4034B0534B2434L0547E05 Acknowledgements Rafael del Rio was partially supported by Project PAPIIT IN111906–3 and Project CONACYT 37444–E. Carmen A. Martínez was partially supported by Scholarship CONACYT 200317 and Project CONACYT 37444–E." @default.
- W2088882321 created "2016-06-24" @default.
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- W2088882321 date "2007-10-01" @default.
- W2088882321 modified "2023-10-16" @default.
- W2088882321 title "Sturm–Liouville operators in the half axis with shifted potentials" @default.
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- W2088882321 doi "https://doi.org/10.1080/00036810701481418" @default.
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