Abstract
By applying the theory of semigroups, we generalize an earlier result of Komornik and Loreti [5] on the observability of compactly perturbed systems. As an application, we answer a question of the same authors concerning the observability of weakly coupled linear distributed systems.
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Mehrenberger, M. Observability of coupled systems. Acta Mathematica Hungarica 103, 321–348 (2004). https://doi.org/10.1023/B:AMHU.0000028832.47891.09
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DOI: https://doi.org/10.1023/B:AMHU.0000028832.47891.09