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Both continuous and approximation theories are illustrated by specific canonical hyperbolic-like equations with boundary control, where the abstract assumptions are actually sharp regularity properties of the hyperbolic dynamics under discussion. Assumptions are divided in two groups. A first group of dynamical assumptions (actually dynamic properties) imply some preliminary critical properties of the control problem, including the definition of the would-be Riccati operator, in terms of the original data. However, in order to guarantee that such an operator is moreover the unique solution (within a specific class) of the corresponding Differential\/Integral Riccati Equation, additional smoothing assumptions on the operators defining the performance index are required. The ultimate goal is to show that the the discrete finite dimensional Riccati based feedback operator, when inserted into the original PDE dynamics, provides near optimal performance.<\/jats:p>","DOI":"10.1007\/s10957-025-02640-5","type":"journal-article","created":{"date-parts":[[2025,3,30]],"date-time":"2025-03-30T08:31:54Z","timestamp":1743323514000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Numerical Approximation of Riccati-Based Hyperbolic-Like Feedback Controls"],"prefix":"10.1007","volume":"205","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3342-2202","authenticated-orcid":false,"given":"Irena","family":"Lasiecka","sequence":"first","affiliation":[]},{"given":"Roberto","family":"Triggiani","sequence":"additional","affiliation":[]},{"given":"Xiang","family":"Wan","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2025,3,27]]},"reference":[{"issue":"1","key":"2640_CR1","doi-asserted-by":"publisher","first-page":"46","DOI":"10.1007\/s00233-022-10288-0","volume":"105","author":"P Acquistapace","year":"2022","unstructured":"Acquistapace, P., Bucci, F.: On the infinitesimal generator of an optimal state semigroup. 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