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Herrero, Miguel A. and Velázquez, J.J. L.
(1991)
*Radial solutions of a semilinear elliptic problem.*
Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 118
(3-4).
pp. 305-326.
ISSN 0308-2105

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Official URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8244935

## Abstract

We analyse the set of nonnegative, global, and radial solutions (radial solutions, for short) of the equation -Δu + u(p) = f in R(N), N ≥ 1, where 0 < p < 1, and f element-of L(loc)1(R(N)) is a radial and almost everywhere nonnegative function. We show that radial solutions of (E) exist if f(r) = o(r2p/1-p) or if f(r) ≈ cr2p/1-p as r --> ∞, where [GRAPHICS] When f(r) = c*r2p/1-p + h(r) with h(r) = o(r2p/1-p) as r --> ∞, radial solutions continue to exist if h(r) is sufficiently small at infinity. Existence, however, breaks down if h(r) > 0, [GRAPHICS] Whenever they exist, radial solutions are characterised in terms of their asymptotic behaviour as r --> ∞.

Item Type: | Article |
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Uncontrolled Keywords: | Equation; RN; set of nonnegative; global and radial solutions |

Subjects: | Sciences > Mathematics > Differential equations |

ID Code: | 17132 |

Deposited On: | 20 Nov 2012 12:41 |

Last Modified: | 12 Dec 2018 15:08 |

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