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Global continuum of positive solutions for discrete p -Laplacian eigenvalue problems

Dingyong BaiYuming Chen — 2015

Applications of Mathematics

We discuss the discrete p -Laplacian eigenvalue problem, Δ ( φ p ( Δ u ( k - 1 ) ) ) + λ a ( k ) g ( u ( k ) ) = 0 , k { 1 , 2 , ... , T } , u ( 0 ) = u ( T + 1 ) = 0 , where T > 1 is a given positive integer and φ p ( x ) : = | x | p - 2 x , p > 1 . First, the existence of an unbounded continuum 𝒞 of positive solutions emanating from ( λ , u ) = ( 0 , 0 ) is shown under suitable conditions on the nonlinearity. Then, under an additional condition, it is shown that the positive solution is unique for any λ > 0 and all solutions are ordered. Thus the continuum 𝒞 is a monotone continuous curve globally defined for all λ > 0 .

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