Abstract
The exact boundary controllability and the exact boundary observability for the 1-D first order linear hyperbolic system were studied by the constructive method in the framework of weak solutions in the work [Lu, X. and Li, T. T., Exact boundary controllability of weak solutions for a kind of first order hyperbolic system — the constructive method, Chin. Ann. Math. Ser. B, 42(5), 2021, 643–676]. In this paper, in order to study these problems from the viewpoint of duality, the authors establish a complete theory on the HUM method and give its applications to first order hyperbolic systems. Thus, a deeper relationship between the controllability and the observability can be revealed. Moreover, at the end of the paper, a comparison will be made between these two methods.
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This work was supported by the National Natural Science Foundation of China (Nos. 11831011, 11901082), the Natural Science Foundation of Jiangsu Province (No. BK20190323) and the Fundamental Research Funds for the Central Universities of China.
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Lu, X., Li, T. Exact Boundary Controllability of Weak Solutions for a Kind of First Order Hyperbolic System — the HUM Method. Chin. Ann. Math. Ser. B 43, 1–16 (2022). https://doi.org/10.1007/s11401-022-0300-2
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DOI: https://doi.org/10.1007/s11401-022-0300-2