Mathematics / Matematik

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  • Article
    Citation - WoS: 26
    Citation - Scopus: 27
    An Elementary Proof of the Lack of Null Controllability for the Heat Equation on the Half Line
    (Elsevier, 2020) Kalimeris, Konstantinos; Özsarı, Türker
    In this note, we give an elementary proof of the lack of null controllability for the heat equation on the half line by employing the machinery inherited by the unified transform, known also as the Fokas method. This approach also extends in a uniform way to higher dimensions and different initial-boundary value problems governed by the heat equation, suggesting a novel methodology for studying problems related to controllability. (C) 2020 Elsevier Ltd. All rights reserved.