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Local exact controllability to positive trajectory for parabolic system of chemotaxis

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  • In this paper, we study controllability for a parabolic system of chemotaxis. With one control only, the local exact controllability to positive trajectory of the system is obtained by applying Kakutani's fixed point theorem and the null controllability of associated linearized parabolic system. The positivity of the state is shown to be remained in the state space. The control function is shown to be in $L^\infty(Q)$, which is estimated by using the methods of maximal regularity and $L^p$-$L^q$ estimate for parabolic equations.
    Mathematics Subject Classification: Primary: 93B05, 93C20; Secondary: 37C25.


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