Abstract
Abstract We deal with the extinction properties of the weak solutions for a p-Laplacian equation with a gradient nonlinearity. The critical extinction exponent is specified and the decay estimates of the extinction solutions are given.
Highlights
The main aim of this paper is devoted to studying the extinction properties of the weak solutions for the following p-Laplacian equation
Generally there is no classical solution and we introduce the definition of the weak solution for problem (1.1) as follows
Assume that 0 < q + l < p − 1, for any nonzero nonnegative initial data u0, problem (1.1) admits at least one non-extinction solution provided that μ is sufficiently large
Summary
. Recently, under decay estimates as the restrictive condition N > p, Liu and Mu [33,34] considered problem (1.1) with l = 0 and proved that q = p − 1 is the critical extinction exponent of the nonnegative weak solution. Assume that 0 < q + l < p − 1, for any nonzero nonnegative initial data u0, problem (1.1) admits at least one non-extinction solution provided that μ is sufficiently large. P , the nonnegative weak solution of problem (1.1) vanishes in finite time p+2 provided that μ is sufficiently small. (2) For any nonzero nonnegative initial data u0, problem (1.1) admits at least one non-extinction solution provided that μ is sufficiently large. Theorems 1.2, 1.3, and 1.4 generalize and extend the previous results in [7,30,31,33,34] to a more general case
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