Well-posedness and controllability of Kawahara equation in weighted Sobolev spaces. (June 2021)

• Record Type: Journal Article
• Authors: Capistrano-Filho, Roberto de A.; Gomes, Milena Monique de S.
• Is Part Of: Nonlinear analysis. Volume 207(2021)
• Publication Date: 2021-06
• Subjects: primary 35Q53 93B05 -- secondary 37K10; Kawahara equation -- Null controllability -- Exact controllability -- Regional controllability -- Lax–Milgram theorem -- Weighted Sobolev space; Mathematical analysis -- Periodicals; Functional analysis -- Periodicals; Nonlinear theories -- Periodicals; Analyse mathématique -- Périodiques; Analyse fonctionnelle -- Périodiques; Théories non linéaires -- Périodiques; Functional analysis; Mathematical analysis; Nonlinear theories; Periodicals; Electronic journals; 515.7248
• DOI: 10.1016/j.na.2021.112267
• Languages: English
• ISSNs: 0362-546X

Abstract

Abstract: We consider the Kawahara equation, a fifth order Korteweg–de Vries type equation, posed on a bounded interval. The first result of the article is related to the well-posedness in weighted Sobolev spaces, which one was shown using a general version of the Lax–Milgram Theorem. With respect to the control problems, we will prove two results. First, if the control region is a neighborhood of the right endpoint, an exact controllability result in weighted Sobolev spaces is established. Lastly, we show that the Kawahara equation is controllable by regions on L 2 Sobolev space, the so-called regional controllability, that is, the state function is exact controlled on the left part of the complement of the control region and null controlled on the right part of the complement of the control region.