Constant-sign solutions of a system of V
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Ravi P. Agarwal; Donal OβRegan; Christopher C. Tisdell; Patricia J.Y. Wong
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Article
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2007
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Elsevier Science
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English
β 333 KB
We consider the following system of Volterra integral equations: and some of its particular cases that arise from physical problems. Criteria are offered for the existence of one and more constantsign solutions u = (u 1 , u 2 , . . . , u n ) of the system in (C[0, T ]) n . We say u is of constant s