张志军
Zhang Zhijiun
摘要:
By Karamata regular variation theory and constructing comparison functions, the author shows the existence and global optimal asymptotic behaviour of solutions for a semilinear elliptic problem △u=k(x)g(u), u>0, x in Omega,
u|_{\partial \Omega}=+∞, where Omega is a bounded domain with smooth boundary in RN; g ∈ C1[0,∞), g(0)=g'(0)=0, and there exists p>1, such that lims→∞g(sξ)g(s)=ξp, ∀ ξ>0, and k∈Cαloc(Ω) is non-negative non-trivial in Omega which may be singular on the boundary.
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