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- W1979626057 abstract "In this paper we consider the semilinear elliptic problem Δu=a(x)f(u), u⩾0 in Ω, with the boundary blow-up condition u|∂Ω=+∞, where Ω is a bounded domain in RN (N⩾2), a(x)∈C(Ω) may blow up on ∂Ω and f is assumed to satisfy (f1) and (f2) below which include the sublinear case f(u)=um, m∈(0,1). For the radial case that Ω=B (the unit ball) and a(x) is radial, we show that a solution exists if and only if ∫01(1−r)a(r)dr=+∞. For Ω a general domain, we obtain an optimal nonexistence result. The existence for nonradial solutions is also studied by using sub-supersolution method." @default.
- W1979626057 created "2016-06-24" @default.
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- W1979626057 date "2006-02-01" @default.
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- W1979626057 title "Existence and nonexistence of blow-up boundary solutions for sublinear elliptic equations" @default.
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- W1979626057 doi "https://doi.org/10.1016/j.jmaa.2005.03.070" @default.
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