Abstract
We survey recent results on the control problem for the heat equation on unbounded and large bounded domains. First we formulate new uncertainty relations, respectively spectral inequalities. Then we present an abstract control cost estimate which improves upon earlier results. The latter is particularly interesting when combined with the earlier mentioned spectral inequalities since it yields sharp control cost bounds in several asymptotic regimes. We also show that control problems on unbounded domains can be approximated by corresponding problems on a sequence of bounded domains forming an exhaustion. Our results apply also for the generalized heat equation associated with a Schrödinger semigroup.
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Egidi, M., Nakić, I., Seelmann, A., Täufer, M., Tautenhahn, M., Veselić, I. (2020). Null-controllability and control cost estimates for the heat equation on unbounded and large bounded domains. In: Kerner, J., Laasri, H., Mugnolo, D. (eds) Control Theory of Infinite-Dimensional Systems. Operator Theory: Advances and Applications(), vol 277. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-35898-3_5
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DOI: https://doi.org/10.1007/978-3-030-35898-3_5
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Publisher Name: Birkhäuser, Cham
Print ISBN: 978-3-030-35897-6
Online ISBN: 978-3-030-35898-3
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