Integral Inequalities for the Principal Fundamental System of Solutions of a Homogeneous Sturm-Liouville Equation

N. A. Chernyavskaya, L. A. Shuster

Research output: Contribution to journalArticlepeer-review

Abstract

We consider the equation
−y′′(x)+q(x)y(x)=f(x),x∈R,
where f∈Lp(R), p∈[1,∞] (L∞(R):=C(R)) and
0≤q∈Lloc1(R);∃a>0:infx∈R∫x+ax−aq(t)dt>0,
(Condition (2) guarantees correct solvability of (1) in class Lp(R), p∈[1,∞].) Let y be a solution of (1) in class Lp(R), p∈[1,∞], and θ some non-negative and continuous function in R. We find minimal additional requirements to θ under which for a given p∈[1,∞] there exists an absolute positive constant c(p) such that the following inequality holds:
supx∈Rθ(x)|y(x)|≤c(p)∥f∥Lp(R)  ∀f∈Lp(R).
Original languageAmerican English
Pages (from-to)423-448
Number of pages26
JournalBolletino dell Unione Matematica Italiana
Volume5
Issue number2
StatePublished - 2012

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