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This paper deals with blow-up properties of solutions to a semilinear parabolic system with weighted localized terms, subject to the homogeneous Dirichlet boundary conditions. We investigate the influence of the three factors: localized sources , vⁿ(x₀,t), local sources , , and weight functions a(x),b(x), on the asymptotic behavior of solutions. We obtain the uniform blow-up profiles not only for the cases m,q ≤ 1 or m,q > 1, but also for m > 1 q < 1 or m < 1 q > 1.
In this paper the time-optimal boundary control problem is presented for a distributed infinite order parabolic system in which time lags appear in the integral form both in the state equation and in the boundary condition. Some specific properties of the optimal control are discussed.
We study a class of bistable reaction-diffusion systems used to model two competing
species. Systems in this class possess two uniform stable steady states representing
semi-trivial solutions. Principally, we are interested in the case where the ratio of the
diffusion coefficients is small, i.e. in the
near-degenerate case. First, limiting arguments are presented to relate
solutions to such systems to those of the degenerate case where one species...
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