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@article{1483776, author = {Hasil, Petr and Veselý, Michal}, article_location = {WIEN}, article_number = {1}, doi = {http://dx.doi.org/10.1007/s00605-018-1232-5}, keywords = {Sturm-Liouville equation; Prüfer angle; oscillation theory; periodic coefficient; non-oscillation}, language = {eng}, issn = {0026-9255}, journal = {MONATSHEFTE FUR MATHEMATIK}, title = {Prüfer angle and non-oscillation of linear equations with quasiperiodic data}, url = {https://link.springer.com/article/10.1007/s00605-018-1232-5}, volume = {189}, year = {2019} }
TY - JOUR ID - 1483776 AU - Hasil, Petr - Veselý, Michal PY - 2019 TI - Prüfer angle and non-oscillation of linear equations with quasiperiodic data JF - MONATSHEFTE FUR MATHEMATIK VL - 189 IS - 1 SP - 101-124 EP - 101-124 PB - SPRINGER WIEN SN - 00269255 KW - Sturm-Liouville equation KW - Prüfer angle KW - oscillation theory KW - periodic coefficient KW - non-oscillation UR - https://link.springer.com/article/10.1007/s00605-018-1232-5 L2 - https://link.springer.com/article/10.1007/s00605-018-1232-5 N2 - We consider the Sturm-Liouville differential equations with a power of the independent variable and sums of periodic functions as coefficients (including the case when the periodic coefficients do not have any common period). Using known results, one can show that the studied equations are conditionally oscillatory, i.e., there exists a threshold value which can be expressed by the coefficients and which separates oscillatory equations from non-oscillatory ones. It is very complicated to specify the behaviour of the treated equations in the borderline case. In this paper, applying the method of the modified Prüfer angle, we answer this question and we prove that the considered equations are non-oscillatory in the critical borderline case. ER -
HASIL, Petr a Michal VESELÝ. Prüfer angle and non-oscillation of linear equations with quasiperiodic data. \textit{MONATSHEFTE FUR MATHEMATIK}. WIEN: SPRINGER WIEN, 2019, roč.~189, č.~1, s.~101-124. ISSN~0026-9255. Dostupné z: https://dx.doi.org/10.1007/s00605-018-1232-5.
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