Remarks on blow-up phenomena in p-Laplacian heat equation with inhomogeneous nonlinearity

Abstract

We investigate the $p-$Laplace heat equation $u_t-\Delta_p u=\zeta(t)f(u)$ on a bounded smooth domain $\Omega\subset\mathbb{R}^N$. Using differential inequalities arguments, we prove blow-up results under suitable conditions on $\zeta, f$, and the initial data $u_0$. We also give an upper bound for the blow-up time in each case.