incarcerate 发表于 2025-3-26 23:59:03

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相信 发表于 2025-3-27 03:17:22

Comparison of Boundary Value Problems,llowing simple result for second order equations motivates our study. Consider the second order equation . with . > 0. Here ... = ... = .′ and . = 1 is the only admissible integer. The conjugate point bvp, in fact the (1,1)-conjugate bvp, is . and the focal point bvp is

sparse 发表于 2025-3-27 08:08:33

Solutions on an Infinite Interval,ation when its domain of definition ends with a singular point. For simplicity we shall consider the interval [.,∞), however, similar results hold on an interval [.,ω), when the equation has a suitable singularity at . and solutions may oscillate on [.,.).

Glycogen 发表于 2025-3-27 12:31:40

Disconjugacy and its Characterization,s characterization serves as a basis to a large number of necessary conditions and sufficient conditions for (.)-disfocality. For (.)-disconjugacy the situation is quite different. Our study is less systematic and each result is proved by some ad hoc method.

把手 发表于 2025-3-27 13:47:06

978-90-481-4806-6Springer Science+Business Media Dordrecht 1997

自制 发表于 2025-3-27 20:16:50

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ANNUL 发表于 2025-3-27 23:48:10

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happiness 发表于 2025-3-28 03:15:57

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MIRTH 发表于 2025-3-28 07:38:51

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chiropractor 发表于 2025-3-28 14:28:33

Disfocality and its Characterization,Among all boundary value functions, the (.)-focal point is most easily treated thanks to the characterization of (.)-disfocality by a naturally arising set of inequalities.
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查看完整版本: Titlebook: Oscillation Theory of Two-Term Differential Equations; Uri Elias Book 1997 Springer Science+Business Media Dordrecht 1997 Boundary value p