%0 Journal Article %T On nonnegative entire solutions of second-order semilinear elliptic systems %A Tomomitsu Teramoto %J Electronic Journal of Differential Equations %D 2003 %I Texas State University %X We consider the second-order semilinear elliptic system $$ Delta u_i=P_i(x)u_{i+1}^{alpha_i}quadhbox{in }mathbb{R}^N, quad i=1,2,dots,m $$ with nonnegative continuous functions $P_i$. We establish nonexistence criteria of nonnegative nontrivial entire solutions for this system. We also proved a Liouville type theorem for nonnegative entire solutions. %K Elliptic system %K nonnegative entire solutions %U http://ejde.math.txstate.edu/Volumes/2003/94/abstr.html