TY - JOUR T1 - A Note to the Cauchy Problem for the Degenerate Parabolic Equations with Strongly Nonlinear Sources AU - Tingting Zheng & Junning Zhao JO - Journal of Partial Differential Equations VL - 3 SP - 199 EP - 204 PY - 2009 DA - 2009/08 SN - 22 DO - http://doi.org/10.4208/jpde.v22.n3.1 UR - https://global-sci.org/intro/article_detail/jpde/5253.html KW - Nonlinear sources KW - global solutions KW - nonexistence AB -
In this note we study the nonexistence of nontrivial global solutions on S=R^N×(0,∞) for the following inequalities: |u|_t≥Δ(|u|^{m-1}u)+|u|^q, and |u|_t≥div(|∇u|^{p-2}∇|u|)+|u|^q. When m, p, q satisfy some given conditions, the nonexistence of nontrivial global solution is proved, without taking their traces on the hyperplans t=0 into account.