Existence of Solutions for a Sublinear System of Elliptic Equations
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We study the existence of non-trivial non-negative solutions for the system -Δu = |x|α vp Δv = |x|b uq, where p and q are positive constants with pq < 1, and the domain is the unit ball of ℝN (N > 2) except for the center zero. We look for pairs of functions that satisfy the above system and Dirichlet boundary conditions set to zero. Our results also apply to some super-linear systems.