Boundary value problems for a coupled system of second-order nonlinear difference equations. (English) Zbl 1422.39024
Summary: We discuss the existence of nontrivial solutions to the boundary value problems for a coupled system of second-order nonlinear difference equations by using the critical point theory. The nontrivial solutions where neither of the components is identically zero are achieved under some sufficient conditions.
Keywords:
boundary value problem; coupled system; nonlinear difference equation; critical point theoryReferences:
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