×

Local and global existence for evolutionary \(p\)-Laplacian equation with nonlocal source. (English) Zbl 1424.35236

The authors investigate the existence and nonexistence of solutions for the parabolic equation \[ u_t-\Delta_p u=u^\alpha|\nabla u|^{l}\ \Big(\int_{{\mathbb R}^N}K(y)u^{q}(y,t)\,dy\Big)^{(r-1)/q}\quad\text{ in }{\mathbb R}^N\times(0,T) \]
subject to initial condition \(u(x,0)=u_0(x)\). The authors derive first some useful a priori estimates which are further used to establish the local and global existence of a solution. Further, nonexistence results are obtained. In particular, a Fujita type critical exponent is deduced.

MSC:

35K92 Quasilinear parabolic equations with \(p\)-Laplacian
35A01 Existence problems for PDEs: global existence, local existence, non-existence
35B33 Critical exponents in context of PDEs
35B44 Blow-up in context of PDEs
35K15 Initial value problems for second-order parabolic equations
35K65 Degenerate parabolic equations
35R09 Integro-partial differential equations
PDF BibTeX XML Cite