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Destabilizing effect of unilaternal conditions in reaction-diffusion systems. (English) Zbl 0597.35006
Stationary solutions of reaction-diffusion systems with unilateral constraints are considered. Some examples are given, for which the spatially homogeneous stationary solution of the system with unilateral constraints can be unstable even for diffusion coefficients for which it is stable as a solution of the classical problem with Neumann conditions. Some general considerations on this subject are presented.
Reviewer: D.Fage

35B30 Dependence of solutions to PDEs on initial and/or boundary data and/or on parameters of PDEs
35B35 Stability in context of PDEs
35K50 Systems of parabolic equations, boundary value problems (MSC2000)
35K60 Nonlinear initial, boundary and initial-boundary value problems for linear parabolic equations
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