Abstract.
We study the long-term behaviour of the parabolic evolution equation \(\[u'(t)=A(t)u(t)+f(t), t>s,\quad u(s)=x. \]\) If \( A(t) \) converges to a sectorial operator A with \( \sigma(A)\cap i \Bbb R =\emptyset \) as \( t\to\infty \), then the evolution family solving the homogeneous problem has exponential dichotomy. If also \( f(t)\to f_\infty \), then the solution u converges to the 'stationary solution at infinity', i.e., \( \lim_{t\to\infty}u(t)= -A\sp{-1}f_\infty=:u_\infty, \qquad \lim_{t\to\infty}u'(t)=0, \qquad \lim_{t\to\infty}A(t)u(t)=Au_\infty. \).
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Received July 20, 2000; accepted August 15, 2000.
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Schnaubelt, R. Asymptotically autonomous parabolic evolution equations. J.evol.equ. 1, 19–37 (2001). https://doi.org/10.1007/PL00001363
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DOI: https://doi.org/10.1007/PL00001363