Sign changing
Existence and multiplicity of solutions for Klein–Gordon–Maxwell systems with sign changing potentials
... dealt with by Azzollini, Pisani, and Pomponio in [5]. Mugnai in [6] studied the existence of radially symmetric solitary waves for a system of a nonlinear Klein–Gordon equation cou- pled with Maxwell’s equation in the ...
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Existence of symmetric positive solutions for a multipoint boundary value problem with sign-changing nonlinearity on time scales
... lows. Section is devoted to some preliminary lemmas. We give and prove our main re- sult in Section . Section contains an illustrative example. To the best of our knowledge, symmetric positive solutions for ...
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Ground state sign-changing solutions for semilinear Dirichlet problems
... minimizer of on M may not be unique, and their arguments become invalid. This pa- per intends to address this problem caused by the dropping of this “strictly increasing” condition on f . Motivated by the works [2, 6, 9, ...
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Sign-changing solutions for some nonlinear problems with strong resonance
... The resonance problem has been widely studied by many authors using various methods–see [1-6] and the references therein. We will use critical point and pseudo- index theories to obtain the sign-changing ...
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Sign-changing solutions for asymptotically linear operator equations and applications
... In this paper, by using the topological degree and fixed point index theory, the existence of three kinds of solutions (i.e., sign-changing solutions, positive solutions, and negative solutions) for ...
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RETRACTED ARTICLE: Sign changing solutions to Schrödinger Kirchhoff type equations with critical exponent
... where a,b, μ > 0 are constants, 2 ∗ = 6 is the critical Sobolev exponent in three spatial dimensions. Under appropriate assumptions on nonnegative functions k(x) and h(x), we establish the existence of positive and ...
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Sign-changing solution for a third-order boundary-value problem in ordered Banach space with lattice structure
... In this paper, the sign-changing solution of a third-order two-point boundary-value problem is considered. By calculating the eigenvalues and the algebraic multiplicity of the linear problem and using a new ...
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On a sign-changing solution for some fractional differential equations
... denotes the Euler gamma function, provided that the right side is point wise defined on (, +∞). The existence result of a sign-changing solution is given by topological degree theory and fixed point index ...
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Existence and concentration of a nonlinear biharmonic equation with sign changing potentials and indefinite nonlinearity
... potential well whose depth is controlled by λ, were firstly introduced by Bartsch and Wang [3], in which the authors studied the nonlinear Schrödinger equations. For λ > 0 large, one expects to find solutions which ...
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Sign changing solutions to discrete fourth order Neumann boundary value problems
... of sign-changing solutions, positive solutions, and negative solutions for BVP ...of sign-changing solutions, positive solutions, and negative solutions for the above discrete boundary value ...
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Positive solutions of discrete Neumann boundary value problems with sign-changing nonlinearities
... In recent years, positive solutions of boundary value problems for difference equations have been widely studied. See [–] and the references therein. However, little work has been done that has referred to the ...
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Damped vibration problems with sign-changing nonlinearities: infinitely many periodic solutions
... We obtain infinitely many nontrivial periodic solutions for a class of damped vibration problems, where nonlinearities are superlinear at infinity and primitive functions of nonlinearities are allowed to be ...
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Multiplicity results for a fractional Kirchhoff equation involving sign-changing weight function
... In this paper, we prove the existence and multiplicity of solutions for a fractional Kirchhoff equation involving a sign-changing weight function which generalizes the corresponding result of Tsung-fang Wu ...
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Existence of solutions for the fractional Kirchhoff equations with sign-changing potential
... where the parameter λ > 0 and constants a,b > 0. By applying the mountain pass theorem and the linking theorem, some existence results on the above fractional boundary value problem are obtained. It should be ...
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Sign-Changing and Extremal Constant-Sign Solutions of Nonlinear Elliptic Neumann Boundary Value Problems
... Our aim is the study of a class of nonlinear elliptic problems under Neumann conditions involving the p-Laplacian. We prove the existence of at least three nontrivial solutions, which means that we get two extremal ...
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Nontrivial solutions of inverse discrete problems with sign changing nonlinearities
... This paper is concerned with the existence of solutions of an inverse discrete problem with sign-changing nonlinearity. This kind of problems includes, as a particular case, nth order difference equations ...
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Multiplicity of solutions for a class of fractional p-Kirchhoff system with sign-changing weight functions
... with sign-changing concave-convex nonlinearity, especially for parameters meeting a+b < p ≤ p(τ + 1) < β < p ∗ s or p < a+ b < min { p(τ + 1), p ∗ s } ...
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Infinitely many sign changing solutions for a Schrö dinger equation
... Remark 1.1 In [2,3], they got sign-changing solutions for elliptic problem with Dirichlet boundary value. Those abstract results involved a Banach space of continuous functions in the Hilbert space, where ...
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The eigenvalues and sign changing solutions of a fractional boundary value problem
... sign-changing solutions of the corresponding nonlinear problem by fixed point index and Leray-Schauder degree. To date, no paper has appeared in the literature which discusses sign-changing ...
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Radial sign-changing solutions to biharmonic nonlinear Schrödinger equations
... In this work we obtain three radial solutions of a biharmonic stationary Schrödinger equation, one being positive, one negative, and one sign changing. The dual decomposition method is used to split the ...
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