Bifurcation from infinity and nodal solutions of quasilinear problems without the signum condition
In this paper, we shall establish a unilateral global bifurcation theorem from infinity for a class of p-Laplacian problems. As an application of the above result, we shall study the global behavior of the components of nodal solutions of the following problem {(φp(u′))′+λa(t)f(u)=0,t∈(0,1),u(0)=u(1...
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Published in | Journal of mathematical analysis and applications Vol. 397; no. 1; pp. 119 - 123 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Inc
01.01.2013
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Subjects | |
Online Access | Get full text |
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Summary: | In this paper, we shall establish a unilateral global bifurcation theorem from infinity for a class of p-Laplacian problems. As an application of the above result, we shall study the global behavior of the components of nodal solutions of the following problem {(φp(u′))′+λa(t)f(u)=0,t∈(0,1),u(0)=u(1)=0, where φp(s)=|s|p−2s, a∈C([0,1],[0,+∞)) with a≢0 on any subinterval of [0,1]; f:R→R is continuous, and there exist two constants s2<0<s1 such that f(s2)=f(s1)=f(0)=0, f(s)s>0 for s∈R∖{s2,0,s1}. Moreover, we give the intervals for the parameter λ which ensure the existence of multiple nodal solutions for the problem if f0∈(0,+∞) and f∞∈(0,+∞), where f(s)/φp(s) approaches f0 and f∞ as s approaches 0 and ∞, respectively. We use topological methods and nonlinear analysis techniques to prove our main results. |
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ISSN: | 0022-247X 1096-0813 |
DOI: | 10.1016/j.jmaa.2012.07.056 |