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Reachable subspaces, control regions and heat equations with memory

G. Wang, Y. Zhang, E. Zuazua. Reachable subspaces, control regions and heat equations with memory. (2021)

Abstract. We study the controlled heat equations with analytic memory from two perspectives: reachable subspaces and control regions. Due to the hybrid parabolic-hyperbolic phenomenon of the equations, the support of a control needs to move in time to efficiently control the dynamics. We show that under a sharp sufficient geometric condition imposed to the control regions, the difference between reachable subspaces of the controlled heat equations, with and without memory, is precisely given by a Sobolev space. The appearance of this Sobolev space is attributed to the memory which makes the equation having the wave-like nature. The main ingredients in the proofs of our main results are as: first, the decomposition of the flow (generated by the equation with the null control) given in [31], second, an observability inequality built up in this paper.

Read Full Paper

arxiv:2101.10615

Tags:
control regionsControlled heat equations with memoryreachable subspaces
Last updated on March 17, 2022

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  • Postdoc at DASEL project -Open position
  • FAU MoD Lecture: Applications of AAA Rational Approximation
  • DASEL
  • Optimal actuator design via Brunovsky’s normal form
  • ERC DyCon Impact Dimension (2016-2022)
  • Postdoc at DASEL project -Open position
  • FAU MoD Lecture: Applications of AAA Rational Approximation
  • DASEL
  • Optimal actuator design via Brunovsky’s normal form
  • ERC DyCon Impact Dimension (2016-2022)
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