Infinitely many solutions for ordinary p-Laplacian systems

This paper deals with the existence of infinitely many solutions for the boundary value problem {-(vertical bar u'vertical bar(p-2)u')' + epsilon vertical bar u vertical bar(p-2)u = del F (t, u), in (0, T), ((vertical bar u'vertical bar(p-2)u')(0), -(vertical bar u'vertical bar(p-2)u')(T)) is an element of partial derivative j (u(0), u(T)), where epsilon >= 0, p is an element of (1, infinity) are fixed, the convex function j : R-N x R-N -> (-infinity + infinity] is proper, even, lower semicontinuous and F : (0, T) x R-N -> R is a Caratheodory mapping, continuously differentiable and even with respect to the second variable.