Abstract
A semi-implicit discretization on time of the one-dimensional parabolic equationu t=uxx+f(u(x)), (x, t) ∈ (0, 1)×R+, with Dirichlet boundary conditions, gives rise to an infinite dimensional map Φ h (u): starting from\(\frac{{u_n + 1 - u_n }}{h} = \Delta u_{n + 1} + f(u_n ),\Delta = \frac{{d^2 }}{{dx^2 }},h > 0\), we define a discrete flow on the Hilbert spaceH 10 (0, 1), given by Φ h (u) = (I -hΔ)-1(u+h f o u). The corresponding flow has gradient structure, compact attractor, lap number and Morse-Smale properties and structural stability with respect to the attractor.
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With partial support of FAPESP proc. 90/3918-5.
and* Partialy supported by “Projeto BID-USP-IME”.
With partial support of DGICYT (Spain) under Project PB91-0497.
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Oliva, W.M., de Oliveira, J.C.F. & Solà-Morales, J. An infinite-dimensional Morse-Smale map. NoDEA 1, 365–387 (1994). https://doi.org/10.1007/BF01194986
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DOI: https://doi.org/10.1007/BF01194986