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

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Summary

Introduction

. 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

Proof of the main results
Conclusion

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